main line

简明释义

干线

英英释义

例句

1.The main line of the story revolves around friendship and loyalty.

这个故事的主线围绕着友谊和忠诚展开。

2.Please ensure that all changes are documented in the main line of the project.

请确保所有更改都记录在项目的主线中。

3.The main line of communication between the two departments has improved.

两个部门之间的主要沟通线路已经改善。

4.The train on the main line is scheduled to arrive at 3 PM.

在主线上的火车定于下午3点到达。

5.We need to focus on the main line of our argument during the presentation.

在演示过程中，我们需要关注我们论点的主线。

作文

In the world of transportation, the term main line refers to the primary railway route that connects major cities and regions. This is the backbone of the rail network, facilitating the movement of passengers and freight across long distances. For instance, in the United States, the Amtrak service operates on several main lines, which are crucial for interstate travel. These routes are often equipped with faster trains and more frequent services compared to secondary lines, ensuring efficiency and reliability.The importance of main lines extends beyond just transportation; they play a vital role in economic development. Regions connected by these lines tend to experience growth in trade and tourism. Businesses are more likely to set up operations near a main line due to the ease of access to markets and resources. Furthermore, local economies benefit from the influx of travelers who use these routes to explore new areas.In urban planning, the concept of main lines is also significant. City planners often design public transport systems around these primary routes to maximize accessibility. By doing so, they can reduce traffic congestion and promote the use of public transportation. Cities like London and Tokyo have developed extensive subway systems that align with their respective main lines, making it easier for residents and visitors to navigate the urban landscape.However, maintaining and upgrading main lines can be challenging. Aging infrastructure, budget constraints, and environmental concerns all pose obstacles to the efficient operation of these vital routes. Governments must prioritize funding and resources to ensure that main lines remain safe and effective. Innovations in technology, such as high-speed trains and automated systems, could provide solutions to some of these issues, but they require significant investment and planning.In conclusion, the term main line encompasses more than just a physical railway route; it represents a critical component of transportation networks that supports economic growth, urban development, and efficient travel. Understanding the significance of main lines helps us appreciate the complexities of modern transportation systems and the importance of investing in their future.

在交通运输的世界中，术语main line指的是连接主要城市和地区的主要铁路路线。这是铁路网络的骨干，促进了乘客和货物在长距离上的移动。例如，在美国，Amtrak服务在几条main lines上运营，这些线路对州际旅行至关重要。这些路线通常配备更快的列车和更频繁的服务，与次要线路相比，确保了效率和可靠性。main lines的重要性不仅仅局限于交通；它们在经济发展中也发挥着至关重要的作用。与这些线路相连的地区往往会在贸易和旅游方面经历增长。由于靠近main line便于进入市场和资源，企业更有可能在这些地方设立运营。此外，使用这些线路的旅行者涌入当地经济，进一步促进了经济的繁荣。在城市规划中，main lines的概念同样重要。城市规划者通常围绕这些主要路线设计公共交通系统，以最大化可达性。通过这样做，他们可以减少交通拥堵并促进公共交通的使用。像伦敦和东京这样的城市已经开发出广泛的地铁系统，与各自的main lines对齐，使居民和游客更容易导航城市景观。然而，维护和升级main lines可能面临挑战。老化的基础设施、预算限制和环境问题都对这些重要路线的有效运营构成障碍。政府必须优先考虑资金和资源，以确保main lines保持安全和有效。高科技列车和自动化系统等技术创新可能为解决一些问题提供解决方案，但它们需要大量投资和规划。总之，术语main line不仅仅涵盖了一条物理铁路路线；它代表了支持经济增长、城市发展和高效旅行的交通网络中的关键组成部分。理解main lines的重要性有助于我们欣赏现代交通系统的复杂性以及投资其未来的重要性。