manual whistle

简明释义

人力号笛

英英释义

例句

1.The teacher blew a manual whistle to get the students' attention before starting the lesson.

老师吹响了一个手动哨子以引起学生们的注意，然后开始上课。

2.The coach used a manual whistle to signal the players during practice.

教练在训练中使用了一个手动哨子来发出信号给球员。

3.The lifeguard always carries a manual whistle for emergencies at the pool.

救生员总是携带一个手动哨子以备泳池紧急情况使用。

4.In the absence of an electronic device, the referee relied on a manual whistle to start the game.

在没有电子设备的情况下，裁判依靠一个手动哨子来开始比赛。

5.During the hiking trip, we brought a manual whistle in case we got separated.

在远足旅行中，我们带了一个手动哨子以防我们走散。

作文

In the world of sports and outdoor activities, communication is key. One of the most effective tools for signaling in these environments is the manual whistle. A manual whistle is a simple yet powerful device that can convey messages over long distances without the need for electronic devices or loud shouting. Its design is straightforward, typically made of plastic or metal, and requires no batteries or power source, making it an essential item for athletes, coaches, and outdoor enthusiasts alike.The manual whistle serves various purposes, from signaling the start of a race to alerting participants of danger. For instance, in a soccer match, referees use a manual whistle to indicate fouls, stoppages, and the end of each half. The sharp sound produced by the whistle cuts through the noise of the crowd and ensures that players are aware of the official's decisions. Similarly, in hiking or camping scenarios, a manual whistle can be a lifesaver. If someone gets lost or injured, blowing a whistle can help rescuers locate them quickly, as the sound carries much farther than a human voice.Moreover, the manual whistle is often used in training sessions. Coaches utilize it to capture the attention of their players, signaling them to stop, start, or change direction. This allows for efficient communication during practice, ensuring that drills run smoothly and effectively. The ability to produce a clear and distinct sound with minimal effort makes the manual whistle an indispensable tool in any coach's arsenal.The history of the manual whistle dates back centuries, with its origins rooted in ancient civilizations where similar devices were used for communication and signaling. Over time, the design has evolved, but the fundamental purpose remains the same: to provide a reliable means of communication in various settings. Today, different types of manual whistles are available, including pea whistles, which have a small ball inside that creates a unique sound, and safety whistles, designed to be heard over long distances.In addition to their practical uses, manual whistles also have a cultural significance in some communities. For example, certain indigenous tribes use whistles in traditional ceremonies and rituals, showcasing their importance beyond mere functionality. This aspect highlights the versatility of the manual whistle, as it transcends its basic role as a signaling device, becoming a part of cultural expression and identity.In conclusion, the manual whistle is more than just a simple tool; it is an essential element of communication in sports, outdoor activities, and even cultural practices. Its ability to convey messages clearly and effectively makes it invaluable in various situations. Whether you are a coach, an athlete, or an adventurer, having a manual whistle on hand can make all the difference in ensuring safety and facilitating communication. As we continue to engage in physical activities and explore the great outdoors, the manual whistle will undoubtedly remain a trusted companion for many years to come.

在运动和户外活动的世界中，沟通至关重要。最有效的信号工具之一就是手动哨子。手动哨子是一种简单而强大的设备，可以在不需要电子设备或大声喊叫的情况下传达信息。它的设计简单，通常由塑料或金属制成，不需要电池或电源，使其成为运动员、教练和户外爱好者的必备物品。手动哨子有多种用途，从发出比赛开始的信号到警告参与者危险。例如，在足球比赛中，裁判使用手动哨子来表示犯规、暂停和每半场的结束。哨子发出的尖锐声音穿透了人群的喧嚣，确保球员意识到裁判的决定。同样，在远足或露营场景中，手动哨子可以成为救命稻草。如果有人迷路或受伤，吹响哨子可以帮助救援人员迅速找到他们，因为声音比人的声音传播得更远。此外，手动哨子常用于训练课程。教练利用它来吸引球员的注意，示意他们停止、开始或改变方向。这使得在练习期间能够高效沟通，确保训练顺利有效。用最小的努力发出清晰、独特的声音，使得手动哨子成为任何教练工具箱中不可或缺的工具。手动哨子的历史可以追溯到几个世纪前，其起源根植于古代文明，当时类似的设备被用于通信和信号传递。随着时间的推移，设计有所演变，但基本目的保持不变：在各种环境中提供可靠的沟通手段。如今，各种类型的手动哨子可供选择，包括带球的哨子，这种哨子内部有一个小球，能够发出独特的声音，以及安全哨子，旨在被听到的距离更远。除了实用用途，手动哨子在某些社区中也具有文化意义。例如，某些土著部落在传统仪式和仪式中使用哨子，展示了它们的重要性超越了单纯的功能性。这一方面突显了手动哨子的多功能性，因为它超越了作为信号设备的基本角色，成为文化表达和身份的一部分。总之，手动哨子不仅仅是一个简单的工具；它是体育、户外活动甚至文化实践中沟通的重要元素。它能够清晰有效地传达信息，使其在各种情况下都不可或缺。无论你是教练、运动员还是冒险者，随身携带手动哨子都能在确保安全和促进沟通方面产生巨大的不同。随着我们继续参与体育活动和探索大自然，手动哨子无疑将在未来许多年中继续成为许多人的可信伴侣。