1 PHRASAL VERB （通常指盗贼）闯入，破门而入 If someone, usually a thief, breaks in, they get into a building by force. （通常指盗贼）闯入，破门而入
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Masked robbers broke in and made off with $8,000. [VERB PREP.]
蒙面强盗闯了进来，抢走了8,000美元。
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The thief had broken in through a first-floor window. [VERB PREP.]
小偷是从二楼的窗户进入屋里的。
SYN break and enter, burst in, enter, gain access
3 PHRASAL VERB 打断；插嘴 If you break in on someone's conversation or activity, you interrupt them. 打断；插嘴
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O'Leary broke in on his thoughts. [VERB PREP. + on]
奥利里打断了他的思路。
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Mrs Southern listened keenly, occasionally breaking in with pertinent questions. [VERB PREP.]
萨瑟恩夫人兴致勃勃地听着，间或插话问一些相关的问题。
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'She told you to stay here,' Mike broke in. [VERB PREP. with quote]
“她叫你呆在这儿，”迈克插嘴说。
4 PHRASAL VERB 使适应（新的工作或环境） If you break someone in, you get them used to a new job or situation. 使适应（新的工作或环境） [Also VERB n PREPOSITION]
SYN initiate, train, accustom, habituate
5 PHRASAL VERB 使(新产品）经使用逐渐合用；磨合 If you break in something new, you gradually use or wear it for longer and longer periods until it is ready to be used or worn all the time. 使(新产品）经使用逐渐合用；磨合 [Also VERB n PREPOSITION]
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When breaking in an engine, you probably should refrain from high speed for the first thousand miles. [VERB PREP. noun]
当磨合发动机时，最初的1,000英里里程内尽量不要高速行驶。
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Nathan's new running shoes weren't broken in correctly. [VERB PREP. noun (not pronoun)]
内森的新跑鞋不太合脚。