A plug had been inserted in the drill hole.钻孔已塞上了塞子。Make sure the draining board, sink and plug hole are regularly disinfected.滴水板、水槽和塞孔一定要定期消毒。The banks have the power to pull the plug on the project.银行有能力让该工程终止。...
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...
Sows eat their young because they need the phosphorous.大母猪吃仔猪,因为它们缺少磷质.This apparent contradiction is due to the dominance of some sows in defending the feed hopper.明显的矛盾是由于有些母猪仍霸占着饲料漏斗.As a man sows, so he shall reap .种...