She was now in the second year of active munitions production after long covert preparations. 她在長(cháng)期暗中準備之后，就積極制造軍械，到現在已是第二個(gè)年頭了。
The study presented here is the first step in a program aimed at reducing significantly the background count rate of NaI scintillation units. 這里程序第一步的學(xué)習是為了顯著(zhù)的減少非地址指令傳送單元的暗中統計率。
Cumming tittered in the background. 卡明在背地里傻笑。
A lie is plump in private but lean in public. 謊言在背地里很猖獗，在公眾場(chǎng)合就萎縮。
The choic chanted in the background. 唱詩(shī)班在幕后唱歌。
They are brewing a plot behind the scenes. 他們正在幕后策劃一個(gè)陰謀。
