船在水中有浮力。
chuán zài shuǐzhōng yǒu fúlì 。
The boat has buoyancy in the water.
浮力是使物体在液体中上升的力量。
fúlì shì shǐ wùtǐ zài yètǐ zhōng shàngshēng de lìliàng 。
Buoyancy is the force that causes objects to rise in a liquid.
我们需要计算浮力以确定物体的沉浮。
wǒmen xūyào jìsuàn fúlì yǐ quèdìng wùtǐ de chén fú 。
We need to calculate buoyancy to determine whether the object will sink or float.