Keep down or you'll be hit by shell fragments.趴下,否则你会被弹片击中的.They hoe the garden to keep down the weeds.他们把花园里的草锄掉,阻止其生长.She is managing to keep down her spending.她在设法缩小开支....
This type of degradation is also called depolymerization.这类降解也可称作解聚合.Enoxaparin sodium was prepared from heparin sodium via salinization, esterification, depolymerization and purification.以肝素钠为原料,经成盐 、 酯化 、 解聚和纯化得到依诺肝素钠....
She is just a copycat who follows her sister’s lead in everything.她只是个盲目模仿别人的人, 什么都跟她姐姐学。...a series of copycat attacks by hooligan gangs.流氓团伙的一系列模仿性袭击Skeptics raise other concerns , ones that go beyond the copycat effec...