英文：Separation from her children was a terrible wrench.
中文：同她的孩子們分别是一項很大的痛苦。
英文：The treatment of metal or the separation of metal from ores and ore concentrates by liquid processes, such as leaching, extraction, and precipitation.
中文：水冶金術通過液體過程，象過濾，提煉，沉澱等方法處理金屬，從礦石中或礦石濃縮物中分離出金屬
英文：A separation in the boundary layer of fluid about a moving streamlined body, such as the wing of an airplane, causing a breakdown in the smooth flow of fluid and resulting in turbulence.
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