Another, smaller episode of volcanism 2m years later, which once again heated the planet and turned the seas acid, hammered life again-and again it recovered quickly.

另外，二百年之后较短时期的火山活动再一次使得地球变热，海水变酸，从而再一次打击了生物，但是同样恢复的很快。

youdao

The waste acid from the manufacture of cation exchange resin can be successfully recovered and reused by a new washing process with dilute acid instead of traditional washing process with water.

采用稀酸套洗工艺代替传统的加水稀释洗涤工艺，成功地解决了阳离子交换树脂生产中废酸的回收利用问题。

youdao

The permeation flux can be recovered by washing with acid, surfactant and base as well as appropriate pulse washing.

采用酸、表面活性剂、碱并配以合适的脉冲清洗，有效恢复膜的渗透通量。

youdao

Scientists are testing bone from Nikumaroro to learn if DNA, deoxyribonucleic acid, can be recovered from it.

VOA: special.2011.01.18

The drums, containing hydrochloric acid and sulphuric acid, were stolen from the business in Whitecroft, and later recovered from a property in the same village.

BBC: Forest of Dean man guilty of explosives charge