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重点讲解：
1. speed up (使)(某一过程或活动)加快；
I had already taken steps to speed up a solution to the problem.
我已经采取措施加快解决该问题。
2. put in place 实施；实现；
The restrictions have been put in place, after a five-day national strike.
这项法令是在该国遭受了五天的全国性罢工后颁布的。
3. take part in 参与；
Mrs Kerr was too upset to take part in a reconstruction of her ordeal.
克尔夫人受惊过度，不堪再参与自己所受折磨的场景重现。
4. prevent sb. from doing sth. 阻止；制止；阻碍；
The police have been trying to prevent them fromcarrying weapons.
警方一直都设法阻止他们携带武器。
