fall on 开始(进攻,袭击,落到,适逢);fall in 塌陷。
fall on
1. 向…进攻,袭击,猛烈攻击
例句: They fell on the enemy vigorously.
他们猛烈地向敌人扑去。
2. 落在,(责任、任务、灾难等)落在…身上,由…承担
例句: The responsibility fell upon me.
责任落到了我的肩上。
The bulk of the work will fall on you and me.
大量的工作将落在你和我的头上。
3. 跌倒在…上;掉落在…上
例句:
The boy fell on hard ground and broke his leg.
这个男孩摔倒在硬地上,把腿给弄断了。
4. 开始,着手
例句:
The patient fell on trembling.病人开始发抖起来。
fall in :陷几(屋顶、天花板)塌陷,坍塌
例句:
It has been three years since the roof started to fall in.从屋顶开始坍塌到现在,3年过去了。
The roof threatened to fall in.屋顶有坍塌的危险。
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