n.重力；莊重；嚴(yán)重；嚴(yán)肅

He discoursed impressively on Newton's theory of gravity. 他講述了牛頓的引力定律，給人以深刻的印象。

The stone rolled down the hill by gravity. 石頭在重力作用下向山下滾去。

The lunar gravity is about one-sixth that on earth. 月亮的引力大約為地球的六分之一。

Each graduate behaved with gravity at it. 每個(gè)畢業(yè)生都舉止莊重。

He doesn't seem to understand the gravity of the situation. 他似乎沒有意識(shí)到形勢的嚴(yán)重性。

She does not know the gravity of her illness. 她不知道自己病情嚴(yán)重。

This is a matter of the utmost gravity. 這件事情十萬火急。

He could hardly keep his gravity. 他忍不住要笑出來。

微重力

n.微重力

n.無重量；反重力

失重