larva

简明释义

英[ˈlɑːvə]美[ˈlɑːrvə]

n. [水产] 幼体，[昆] 幼虫

n. （Larva）（芬、捷）拉尔瓦（人名）

复 数 l a r v a e 或 l a r v a s

英英释义

单词用法

同义词

反义词

例句

1.The larva is ingested by a water flea (cyclop), where it develops and becomes infective in two weeks.

幼虫通过水蚤（剑水蚤属）进入人体，在那里发育并在两周后带有感染性。

2.Females plant a single egg in a dung ball where it matures from larva to fully formed beetle, feeding off the waste.

雌性蜣螂会在每个粪球中种下一个虫卵，虫卵以粪便为食，直到幼虫完全发育成成虫。

3.Hamilton, noting that the eggs develop within their host—the larva of another insect—and that the newly emerged adult wasps mate immediately and disperse, offered a remarkably cogent analysis.

汉密尔顿指出，黄蜂卵在寄主即另一种昆虫的幼虫内发育，新出现的成年黄蜂立即交配并四散，这提供了一个非常有说服力的分析。

4.A magnified shot shows the head of a tiger swallowtail butterfly larva.

这个放大的照片显示一只凶猛风蝶幼虫的头部。

5.The casing is nearly airtight, which helps protect the vulnerable egg and later larva.

外层几乎是密封的，可以保护脆弱的蜂卵，以及后来的幼虫。

6.The ability cannot be used again on that Hatchery until those 4 larva have spawned.

这个技能在那4个幼虫被消耗之前不能再释放在基地上。

7.The scientist observed the life cycle of the butterfly, noting how the larva 幼虫 transformed into a pupa.

科学家观察了蝴蝶的生命周期，注意到幼虫如何转变为蛹。

8.The larval 幼虫的 stage is crucial for the development of many insects.

许多昆虫的发育过程中，幼虫的阶段至关重要。

9.The larva 幼虫 of the mosquito can be found in stagnant water.

蚊子的幼虫可以在静止水中找到。

10.Frogs lay eggs that hatch into larvae 幼虫, which eventually develop into adult frogs.

青蛙产卵后孵化成幼虫，最终发育成成年青蛙。

11.In the pond, we found several larvae 幼虫 swimming around, indicating a healthy ecosystem.

在池塘里，我们发现有几只幼虫在游动，表明生态系统健康。

作文

The life cycle of many insects is a fascinating subject, particularly when we examine the role of the larva (幼虫) stage. The larva (幼虫) is a critical phase in the development of insects such as butterflies, beetles, and moths. During this time, the larva (幼虫) undergoes significant growth and transformation, preparing for its eventual metamorphosis into an adult insect. In the case of butterflies, the journey begins when a female butterfly lays eggs on the leaves of a suitable plant. Once the eggs hatch, the tiny larvae (幼虫) emerge, often referred to as caterpillars. These larvae (幼虫) are primarily focused on feeding and growing. They consume large amounts of leaves, which provide the necessary nutrients for their rapid development. This stage can last from a few weeks to several months, depending on the species and environmental conditions.During this time, the larva (幼虫) is vulnerable to predators, such as birds and other insects. To protect themselves, many larvae (幼虫) have developed unique adaptations. For example, some caterpillars possess camouflage that allows them to blend in with their surroundings, while others may mimic the appearance of toxic species to deter potential threats.As the larva (幼虫) grows, it will molt several times, shedding its exoskeleton to accommodate its increasing size. This process is known as ecdysis. Each time a larva (幼虫) molts, it becomes larger and more developed, moving closer to the next stage of its life cycle.Eventually, the larva (幼虫) reaches a point where it is ready to undergo metamorphosis. This is a remarkable transformation that involves significant physiological changes. The larva (幼虫) will find a safe place, often attaching itself to a branch or leaf, and enter a pupal stage known as a chrysalis or pupa. Inside this protective casing, the larva (幼虫) will undergo a complete reorganization of its body structure, ultimately emerging as a fully formed adult.The emergence of the adult from the larva (幼虫) is a moment of great significance. This new phase of life allows the insect to reproduce and continue the cycle. Adult butterflies, for instance, have the ability to fly and seek out mates, ensuring the survival of their species. The transformation from larva (幼虫) to adult is not only a biological marvel but also an essential part of the ecosystem, as these insects play vital roles in pollination and as a food source for other animals.In conclusion, the larva (幼虫) stage is a crucial component of the insect life cycle, characterized by growth, vulnerability, and transformation. Understanding the importance of this stage helps us appreciate the complexity of nature and the intricate processes that sustain life. As we observe these remarkable creatures, we gain insights into the delicate balance of ecosystems and the wonders of biological development.

许多昆虫的生命周期是一个迷人的主题，特别是当我们研究幼虫（larva）阶段的角色时。幼虫（larva）是许多昆虫如蝴蝶、甲虫和蛾子发育中的关键阶段。在此期间，幼虫（larva）经历显著的生长和转变，为最终蜕变为成虫做准备。以蝴蝶为例，这一旅程始于雌蝴蝶在适合的植物叶子上产卵。一旦卵孵化，微小的幼虫（larvae）便会出现，通常被称为毛虫。这些幼虫（larvae）主要专注于进食和生长。它们消耗大量的叶子，以提供快速发展的必要营养。这一阶段可能持续几周到几个月，具体取决于物种和环境条件。在此期间，幼虫（larva）对捕食者，如鸟类和其他昆虫，是非常脆弱的。为了保护自己，许多幼虫（larvae）发展出了独特的适应性。例如，一些毛虫具有伪装能力，可以与周围环境融为一体，而另一些则可能模仿有毒物种的外观，以威慑潜在威胁。随着幼虫（larva）的生长，它将经历几次蜕皮，脱掉外骨骼以适应其不断增加的体型。这个过程被称为蜕皮（ecdysis）。每次幼虫（larva）蜕皮时，它会变得更大、更发育，逐渐接近生命循环的下一个阶段。最终，幼虫（larva）达到一个准备蜕变的阶段。这是一个显著的转变，涉及重大的生理变化。幼虫（larva）会找到一个安全的地方，通常附着在树枝或叶子上，进入一个称为蛹（pupa）的蛹期。在这个保护性的外壳内，幼虫（larva）将经历身体结构的完全重组，最终以完全形成的成虫身份出现。从幼虫（larva）中出现的成虫是一个重要时刻。这一生命的新阶段使昆虫能够繁殖并延续生命周期。例如，成虫蝴蝶能够飞翔并寻找伴侣，从而确保其物种的生存。从幼虫（larva）到成虫的转变不仅是生物学上的奇迹，也是生态系统的重要组成部分，因为这些昆虫在授粉和作为其他动物的食物来源方面发挥着至关重要的作用。总之，幼虫（larva）阶段是昆虫生命周期的一个关键组成部分，具有生长、脆弱和转变的特点。理解这一阶段的重要性帮助我们欣赏自然的复杂性以及维持生命的精细过程。当我们观察这些非凡的生物时，我们获得了对生态系统微妙平衡和生物发展奇迹的深刻见解。