第一、短语精讲

tip off：暗中通知某人，向......泄露消息，泄密

【典型范例1】Greg tipped police off on his car phone about a suspect drunk driver.

格雷格用他的汽车电话向警方报告了一个有酒后驾驶嫌疑的司机。

【典型范例2】He was arrested two days later after a friend tipped off the FBI.

他的一个朋友给美国联邦调查局报了信两天以后他就被捕了。

in custody：被拘留，被监禁

【典型范例1】He is in custody awaiting trial .

他已被拘留候审。

【典型范例2】He spent a week in custody on remand awaiting sentence.

等候判决期间他被还押候审一个星期。

turn in：把（犯罪嫌疑人）交给警方;告发;检举

【典型范例1】He has been given until noon today to turn himself in to authorities.

他被要求在今天中午前向当局投案自首。

【典型范例2】There would be strong incentives to turn someone in.

向警方举报某人将获重赏。

【典型范例3】He seems to be making all the arrangements necessary so that he can continue trafficking in drugs when he turns himself in…

他似乎正在做好各种必要安排，以便他自首后还能继续贩毒。

第二、重点短语回顾

come out of：从......出来

get back to：重新回到，追朔到

get out of：逃离

第三、短语积累

with your hands up：举着手

stay seated：保持原地不动

swim away：游走