啤酒瓶底的沉淀物一到瓶颈部位，就不要往外倒啤酒了。此时你的一杯啤酒会金灿灿地发亮，酒泡鼓出酒杯口，而又不会溢出杯外。 As soon as the sediment starts creeping up the shoulder of the bottle, stop pouring. You should now have a glass of star-bright beer with a head(of foam) that stands proud of the glass but does not overflow.
水冶金术通过液体过程，象过滤，提炼，沉淀等方法处理金属，从矿石中或矿石浓缩物中分离出金属 The treatment of metal or the separation of metal from ores and ore concentrates by liquid processes, such as leaching, extraction, and precipitation.
把咖啡搅一搅好让渣滓沉淀。 Stir the coffee to settle the grounds.