strength
单词辨析：
物理学中指能量、能源，用于人时则指体力和精力。
Potential energy can be used to do work.
势能可以用来做功。
We should devote our energy to the career.
我们应该致力于这项事业。
通常指外力，如物体相撞时产生的力量。
The force of her fall was broken by the straw mats.
草垫的缓冲作用减弱了她下落的冲击力。
The torrents of water rushed ahead with a terrifying force.
急流汹涌奔腾。
普通用词，泛指一切力量、能力等。
Adults know the power of love.
成年人懂得爱的力量。
The propelling power of trains is usually made of steam or electricity.
火车的动力通常来自蒸汽或电。
通常指体力或人、事物等拥有的实力。
He had hardly enough strength left to move his feet.
他连移动双脚的力气都几乎没有了。
Our national strength has increased since 1982.
自1982年以来，我们的国力增强了。
相关例句：
Take into account your own strengths and weaknesses
考虑一下你自己的优缺点。
A tropical storm is gaining strength in the eastern Atlantic.
在大西洋东部，一场热带风暴的风力正逐渐增强。
The drop was caused partly by the pound's strength against the dollar.
下降的部分原因在于英镑对美元的升值。
Its oscillation depends on the strength of the gravitational field
它的振动幅度取决于引力场的强度。
The Alliance in its first show of strength drew a hundred thousand-strong crowd to a rally
该联盟的第一次实力展示便吸引了10万余众参加集会。
He needed more time to bring US forces there up to full strength.
他需要更多时间来增派兵力，以确保驻扎在那里的美国军队兵力充足。