levers

简明释义

英[ˈliːvəz]美[ˈlevərz]

n. 杠杆；手段（lever 的复数）

v. 用杠杆撬动（lever 的第三人称单数）

n. （Levers）人名；（法）勒韦尔

英英释义

单词用法

同义词

反义词

例句

1.I was confronted with an array of knobs, levers, and switches.

我面对着一排旋钮、控制杆和开关。

2.The control systems inside machines used to be physical: gears and levers and cams.

在过去，机器内部的一整套控制系统是由硬件组成的：传动装置，杠杆和凸轮。

3.Subsidy and currency levers can also be pulled to distort trade.

经济补贴和货币杠杆也会影响正常国际贸易。

4.Control panel overwhelms with levers, buttons and lights.

满是杠杆，按钮和灯的控制面板。

5.Robert Fulton once wrote, "The mechanic should sit down among levers, screws, wedges, wheels, etc."

罗伯特·法欧特曾经写道：“一个技师会坐在杠杆、螺丝钉、楔子、轮子等中间。”

6.The levers and light were set up in exactly the same way except that this time it was only Doris who could see the light indicating which lever to press first.

杠杆和光的设置完全一样，只不过这次只有多莉丝能看到先按哪个杠杆的灯的指示。

7.Levers are blanked out of strip steel.

杠杆是用钢条冲压出来的。

8.Some specify file paths on your system, but others adjust levers and knobs deep inside Hadoop's guts.

一些变量指定系统上的文件路径，而其他变量对Hadoop的内部进行深入的调整。

9.The engineer used various levers to lift the heavy machinery.

工程师使用了各种杠杆来提升重型机械。

10.In physics class, we learned about how levers can amplify force.

在物理课上，我们学习了如何利用杠杆来放大力量。

11.He pulled the lever to start the engine.

他拉动了杠杆以启动引擎。

12.Using levers makes it easier to move heavy objects.

使用杠杆可以更轻松地移动重物。

13.The game involves pulling levers to unlock new levels.

这个游戏涉及拉动杠杆来解锁新关卡。

作文

In the world of mechanics and physics, the concept of levers (杠杆) holds significant importance. A lever is a simple machine that amplifies an input force to lift or move an object. The principle behind a lever is based on the balance of moments, which allows us to use less effort to overcome a larger load. This fundamental idea has been utilized in various applications throughout history, ranging from ancient tools to modern machinery. The classic example of a lever is the seesaw found in playgrounds. When one child sits on one end of the lever, the other end rises, demonstrating how the weight on one side can be balanced by the weight on the other. The position of the fulcrum, or pivot point, plays a crucial role in determining how much force is needed to lift the load. By adjusting the distance from the fulcrum to the applied force, we can make lifting easier or harder, showcasing the versatility of levers (杠杆). In daily life, we encounter levers in many forms. For instance, when using a crowbar to lift a heavy object, we are effectively employing a first-class lever. The crowbar’s fulcrum is the point where it contacts the ground, while the effort is applied at one end, allowing us to lift the load on the other end with minimal effort. This practical application highlights how levers enhance our ability to perform tasks that would otherwise require considerable strength. Moreover, levers (杠杆) are not limited to physical objects; they also represent a broader metaphorical concept in various fields. In economics, for example, the term ‘leverage’ is often used to describe the use of borrowed capital to increase potential returns on investment. Here, the idea of a lever symbolizes the capacity to amplify outcomes through strategic actions, similar to how a physical lever amplifies force. Education is another area where levers play a pivotal role. Teachers often act as levers (杠杆) in their students’ lives, providing guidance and support that helps them achieve greater heights than they could on their own. By instilling knowledge and confidence, educators empower their students to reach their full potential, much like how a lever enables us to lift heavier loads with ease. In conclusion, understanding the function and significance of levers (杠杆) enriches our comprehension of both physical mechanics and metaphorical applications in various domains. Whether in engineering, economics, or education, the principle of leveraging resources effectively can lead to remarkable outcomes. As we continue to explore the world around us, recognizing the power of levers in all its forms can inspire innovation and efficiency in our endeavors.