You cannot take a day off without authorization.未经批准你不得休假。It's annoying to have to get authorization for spending such piddling amounts of money.花这麽一点钱也要去请示,真烦人.Formal authorization for the trip was given last week....
She listened. The window creaked - at first almost inaudibly, then louder.她静静地听着,窗子在格格作响――开始声音很小, 后来越来越大.In whichever language, he speaks slowly and almost inaudibly.无论说哪种语言, 波伽利的语速都不快,而且几乎听不见.She spoke inaudibly low.她说话...
The ultrasonics stopped and the light went soft.超声波停了，灯光也弱了一些。In medical and other applications of ultrasonics , a variety of electronic instrumentation is used.超声波在医学和其它应用中, 要使用许多电子仪器设备.Machine parts of irregular shape ...