● check up on:检查
The manager asked the secretary to check up on all the documents before posting them.
● bear down on:袭击
The soldiers are determined to bear down on the enemys headquarters.
● close in on:逼近
The people in the whole town were trapped when the enemys army closed in on them.
● come down on:坚决要求;处罚
The bank came down on its debtors for immediate payment./ Our court is going to come down more severely on illegal immigrants.
● get in on:分享;参与
Betty was amazed because her good friends did not invite her to get in on the profitable enterprise.
● creep up on:慢慢来;包围
We hardly notice the way old age creeps up on us./ Doubt crept up on me about Tommys trustworthiness.
● cut down on:减少;削减
More and more countries have promised to cut down on their military expenses.
● crowd in on:包围
The students crowded in on their teacher to ask her about their examination results.
● fall back on:求助于
He has spent all his savings and now has nothing to fall back on.
● chuck away on:浪费
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