break in

verb

1. make submissive, obedient, or useful

e.g. The horse was tough to break
I broke in the new intern

Synonym: break

2. break so as to fall inward

e.g. He broke in the door

3. start in a certain activity, enterprise, or role

4. break into a conversation

e.g. her husband always chimes in, even when he is not involved in the conversation

Synonym: chime incut input inbutt inchisel inbarge in

5. intrude on uninvited

e.g. The nosy couple broke in on our conversation

6. enter someone's (virtual or real) property in an unauthorized manner, usually with the intent to steal or commit a violent act

e.g. Someone broke in while I was on vacation
They broke into my car and stole my radio!
who broke into my account last night?

Synonym: break

1. （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.

e.g. Masked robbers broke in and made off with $8,000...
蒙面强盗闯了进来，抢走了8,000美元。
e.g. The thief had broken in through a first-floor window.
小偷是从二楼的窗户进入屋里的。

2. 打断；插嘴
If you break in on someone's conversation or activity, you interrupt them.

e.g. O'Leary broke in on his thoughts...
奥利里打断了他的思路。
e.g. Mrs Southern listened keenly, occasionally breaking in with pertinent questions...
萨瑟恩夫人兴致勃勃地听着，间或插话问一些相关的问题。

3. 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.

e.g. The band are breaking in a new backing vocalist.
乐队在帮一名新的后备主唱进行磨合和适应。

4. 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.

e.g. When breaking in an engine, you probably should refrain from high speed for the first thousand miles...
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。
e.g. Nathan's new running shoes weren't broken in correctly.
内森的新跑鞋不太合脚。

1. 打断：Cells need the oxygen in air to break down foods and release energy.细胞需要空气中的氧来分解食物,释放能量. | break in打断 | break into破门而入;突然......起来

2.

2. 闯入：*break away from脱离 | *break in闯入 | *break out 爆发