free fallfree fallD.J.:[ˈfri:ˌfɔ:l]K.K.:[ˈfriˌfɔl]n.1.■自由降落(尤指降落伞张开前的降落),(尤指火箭等的)惯性运动
free fall1.■放下；使落下2.■停止，中止3.■无意中说出；有意无意似地说出4.■流(泪)5.■【数学】划(垂线)6.■自由下降；(尤指降落伞张开前的)自由下落7.■(火箭等的)惯性运动8.■(宇宙飞船在没有发动机推动力时的)自由下降9.■(证券市场上股票价格、外汇率的)突然大幅下跌，自由下跌，自由跌落[亦作 freefall， free-fall]
见:fall: free fall
free fall
noun
noun
- [mass noun]downward movement under the force of gravity only
（物体只受到重力作用时的）自由下落
the path of a body in free fall.
自由落体的路径。
■a rapid decline that cannot be stopped
（不可阻止的）迅速下降
her career seemed about to go into free fall.
她的事业似乎马上就要一落千丈。
■the movement of a spacecraft in space without thrust from the engines
（太空航天器在无发动机推力时的）惯性运动，自由下降
- (free-fall)[no obj.]move under the force of gravity only; fall rapidly
自由下落；快速下落
free fall
名词 free fall:
the ideal falling motion of something subject only to a gravitational field
a sudden sharp decrease in some quantity
free fall