
好词典

源自拉丁语 'gravitas',意为'重量'或'严肃',后通过法语 'gravité' 进入英语。
❶ 重力,指地球或其他天体吸引物体向下的自然力,使物体具有重量并保持在地面上。
“The apple fell from the tree due to gravity.”
(苹果因重力从树上掉下来。)
“Astronauts experience weightlessness because there is no gravity in space.”
(宇航员在太空中失重是因为那里没有重力。)
❶ 严重性,指某事的极端重要性或紧迫性,需要认真对待或关注。
“The gravity of the situation became clear when the storm approached.”
(当风暴临近时,情况的严重性变得显而易见。)
“He spoke with gravity about the dangers of climate change.”
(他严肃地谈论了气候变化的危险。)
center of gravity — 重心,指物体的平衡点或力量的集中点,常用于物理或比喻性描述。
“The center of gravity of the car affects its stability on the road.”
(汽车的重心影响其在道路上的稳定性。)
zero gravity — 零重力,指在太空中或自由落体状态下物体没有重量的状态。
“Astronauts train in zero gravity to prepare for space missions.”
(宇航员在零重力环境下训练,为太空任务做准备。)