gravity

1. N-UNCOUNT Gravity is the force that causes things to drop to the ground. 地球引力; 重力

Arrows would continue to fly forward forever in a straight line were it not for gravity, which brings them down to earth. 要不是重力使箭掉落地上，它将会一直沿直线往前飞行。

2. N-UNCOUNT The gravity of a situation or event is its extreme importance or seriousness. (事态、事件等的) 重要

The president said those who grab power through violence deserve punishment which matches the gravity of their crime. 总统说那些通过暴力攫取权力的人应当受到与其罪行严重性相一致的惩罚。

3. N-UNCOUNT The gravity of someone's behaviour or speech is the extremely serious way in which they behave or speak. (行为、说话的) 严肃

There was an appealing gravity to everything she said. 她说的一切都带有一种吸引人的严肃与庄重。