What is required to achieve or maintain such viability?要达到或维持这种生存能力需要什么?Scientists are experimenting to find ways to ensure the viability of seeds for even longer periods of time.正如我们所说,科学家正在试验努力寻找让种子的生命力更加延长的方法。...a man...
支票由私人快递公司送到了银行。The cheques were delivered to the bank by a private courier firm.快递员能破开10英镑的纸币。The courier had change for a £10 note.我把它快递给纽约的达伦。I couriered it to Darren in New York....
Catalytic dehydrogenation of ethylbenzene is an important method for production of styrene.乙苯催化脱氢是生产苯乙烯的主要方法.Methanol dehydrogenation is a promising route for commercial production of anhydrous formaldehyde.甲醇直接脱氢制无水甲醛是具...