Things of one kind come together.; Birds of a feather flock together.
物以类聚。
2.ready for 准备好
I think he may be ready for a sleep soon.
我想他也许很快就要睡一觉了。
3.rough-and-tumble 混乱
Some fear he is too thin-skinned to survive the rough-and-tumble of a presidential campaign.
有人担心他脸皮太薄，经受不住总统选举的激烈竞争。
4.pay attention to 注意
In doing our work, we must pay attention to ways and means.
做工作应注意方式方法。
