keep in the background

• 暗中

keep in the background的用法和样例：

例句

1. She was now in the second year of active munitions production after long covert preparations.
   她在长期暗中准备之后，就积极制造军械，到现在已是第二个年头了。
2. The study presented here is the first step in a program aimed at reducing significantly the background count rate of NaI scintillation units.
   这里程序第一步的学习是为了显著的减少非地址指令传送单元的暗中统计率。
3. Cumming tittered in the background.
   卡明在背地里傻笑。
4. A lie is plump in private but lean in public.
   谎言在背地里很猖獗，在公众场合就萎缩。
5. The choic chanted in the background.
   唱诗班在幕后唱歌。
6. They are brewing a plot behind the scenes.
   他们正在幕后策划一个阴谋。

词汇搭配

• keep in the background 暗中