The pregnant woman needed to breathe deeply when her heart was beating with such fierceness.当这位孕妇的心如此猛烈地跳动时,她需要做深呼吸.These was the tensity of fierceness in the man's plea.这个家伙的哀求坚执而又猛烈.There was the tensity of fierce...
The major productive methods of serin are albuminolysis, fermentation method, chemical method and enzymic method.其生产方法主要有蛋白质水解法 、 发酵法 、 化学法和酶法,其中酶法是现在研究丝氨酸制备的重要方法....