The course also features creative writing exercises and listening comprehension.这门课程也包括写作练习和听力理解。This was utterly beyond her comprehension.这让她完全无法理解。Please remember that mastery and automaticity are your goals - not just...
可以将二氧化碳液化，以便和其他成分分开。You can liquefy the carbon dioxide to separate it from the other constituents.问题是沙质土壤的液化作用.The problem was one of liquefaction of the sandy soil.由液化空气所取得的氧其纯度通常约为99.5%.Oxygen obtained from liquefied a...