Expression of the exogenous genes was confirmed by assay of � � - galactosidase and glucokinase activity.基因的表达通过β 半 乳糖苷酶和葡糖激酶活性测定得到确证.Objective To observe the replicative senescence - related beta - galactosidase activit...
那些狗继续用爪子疯狂地抓铁丝网。The dogs continued to paw and claw frantically at the chain mesh.这匹狼用爪子挠着树，嚎叫了整晚。The wolf clawed at the tree and howled the whole night.他用他的大爪子握了握基顿的手。He shook Keaton's hand with his big paw....
It was as the magazine's business manager that he found his true metier.他在担任杂志的业务经理后才发现自己真正的专长。Don't ask me how to make an omelette; cooking isn't my metier.可别问我怎么摊鸡蛋, 烹饪不是我的专长.Don't ask me how to mak...