他使橡胶塞牢固地塞进盖上的排气孔.He presses the rubber stopper firmly down on the vent.当掀下按钮时,排气孔通道被阻断,输出信号增大.When the button is depressed the vent is closed and the output signal increases.锁定排气孔.The exhaust port is marked and locked in...
他在那儿的时候体重下降了2英石。He lost two stone in weight during his time there.她戒了酒，但又开始执著于体重问题。She stopped drinking but began obsessing about her weight.早晨开始禁食前，记下你的体重。On the morning before starting the fast, write down your startin...
The slowness is dissolve in hydrofluoric acid and hot oil ofvitriols.缓慢溶于氢氟酸和热浓硫酸.Material illustrating detailed structure of graptolites has been etched from limestone by means of hydrofluoric acid.表明笔石详细构造的物质是利用氢氟酸从石灰岩...