这个男孩在上小学的时候就初次显示出成为运动员的潜力。The boy first showed promise as an athlete in grade school.孩子们先上幼儿园，然后上学前班，再接着上小学。Children graduate to the kindergarten, then pre-school, and then school.这所小学有多少学生？How many pupils does the schoo...
该酶蛋白含有17种氨基酸, 其中甘氨酸(Gly)和丙氨酸(Ala)为主要氨基酸.The protease includes 17 amino acids , among which, Gly and Ala are dominant amino acids.通过重组SOD技术使失去铜锌离子失活的酶蛋白恢复酶的催化活性.Furthermore, the inactivated enzyme losing metal ion is reac...
他转向左面走着, 不时停下来吃沼地上的浆果.He bore away to the left, stopping now and again to eat muskeg berries.我们的左面是店窗明亮的铺子和商业街廊的入口.On our left were the shops, their windows lighted, and the entrance to the galleria.从左面图示你可看到博物馆内部.You ca...