重点讲解：
1. take hold of 完全控制；彻底影响；
They firmly took hold of all the lifelines of their national economy.
他们把国民经济的命脉都牢牢抓到自己手中OSs%JX+TF*!0[wQ9。
2. concentrate on 全神贯注；集中（心思）；
We need to concentrate on our core business.
我们需要集中在核心业务上s44&wmW%lHlO7%iZd3p]。
3. in case 以备；以防；免得；
In case you think I was incautious, take a look at the map.
如果你认为我不够仔细，就自己看看地图.w%~FVdc#7E&arjw54RL。
4. in support of 支持；
Another union has voted for industrial action in support of a pay claim.
另一个工会已经投票赞成采取要求加薪的劳工行动lS0EynHXeDWLo。

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