buoyancy

buoyancy的音标为[ˈbuːəsiəns]，基本翻译是“浮力；轻快；兴高采烈”。速记技巧可以是：boo-sy-ness。

Buoyancy这个词源自拉丁语“buus”，意为“轻的，浮的”。它的变化形式包括名词形式“buoyancy”和形容词形式“buoyant”。

相关单词：

Float（漂浮）：这个词直接源自buoyancy，表示物体在液体中漂浮的状态。例如，一个浮标就是一个漂浮在水面上的物体。

Airy（轻盈的）：这个词表示空气的，轻的，常用来形容物体轻盈或空气流动的状态。

Light（轻的）：这个词是最直接的词源，直接来自拉丁语“lucidus”，表示轻的或明亮的。

Levity（轻率）：这个词表示轻浮，不严肃，常用来形容人的行为或态度。

Buoy（浮标）：这是一个常用的英语单词，表示漂浮在水面上的物体，通常用于引导航行或测量水深。

Buoyant（浮动的）：这个词表示可以漂浮的，常用来形容物体或经济状况。

Floatation（漂浮）：这是一个名词，表示物体的漂浮过程。

Afloat（漂浮）：这是一个副词，表示物体在液体中漂浮的状态。

Upward（向上的）：这个词常用来形容上升或浮起的状态，有时也用来形容经济状况向好。

以上这些单词都与buoyancy这个概念有直接或间接的联系，描述了物体在液体中漂浮、轻盈、轻率、浮标、浮动、漂浮、向上等状态和情况。

常用短语：

1. Buoyant air

2. Buoyancy force

3. Floatation device

4. Buoyancy control

5. Water buoyancy

6. Buoyant effect

7. Buoyancy pump

例句：

1. The balloon is buoyant in the air and floats upwards.

2. The ship is experiencing heavy water buoyancy and needs to be repaired.

3. The diver must control his buoyancy to avoid being trapped underwater.

4. The book is a good introduction to the science of buoyancy and fluid dynamics.

5. The airship is a highly efficient buoyancy device that can travel long distances.

6. Buoyancy pumps are commonly used in deep-sea exploration to provide oxygen and other essentials to submerged equipment.

7. The ocean"s natural buoyancy keeps the Earth"s oceans at a constant level.

英文小作文：

Buoyancy is a fundamental concept in physics that refers to the upward force exerted by a fluid on an object that is immersed in it. It is a crucial aspect of water and air dynamics, and plays a significant role in various fields such as engineering, marine science, and aeronautics.

When an object is submerged in a fluid, it experiences a force that opposes its downward motion and tries to raise it upwards. This force, known as buoyancy, is proportional to the density difference between the fluid and the object, and is dependent on the shape, size, and density of the object.

In engineering applications, buoyancy plays a vital role in the design of structures such as bridges and dams, as it can affect their stability and load-bearing capacity. In marine science, buoyancy is crucial for the survival of marine organisms such as fish and whales, as it determines their buoyant behavior and swimming efficiency. In aeronautics, buoyancy is used to control the altitude and speed of aircraft, and to maintain their stability in turbulent air currents.

From a practical perspective, understanding buoyancy is essential for navigating bodies of water and designing effective flotation devices. It also provides valuable insights into the behavior of fluids and the interaction between objects and their environment. As such, buoyancy is an integral part of our daily lives, shaping our experiences and influencing our actions in numerous ways.