E 2 and E 5 sets mainly produced stainable abortive pollens ( SAP ), whereas E 3 set mainly did empty abortive pollens ( EAP ).E2和E5位点组的作用主要产生染败花粉, 而E3位点组的作用主要产生空败花粉.A device that collates, merges, or matches sets of pun...
Come on over, we've got lots of the old gang here.过来吧，好多老朋友都在这儿。Come on, Bill. Send Tom a card and make his day.来吧，比尔。给汤姆寄张卡片让他高兴高兴吧。Come on now. You know you must be hungry.好，来吧，你肯定已经饿了。...
Scraps of material were saved, cut up and pieced together for quilts.边角碎料都保留下来，剪好后拼在一起做成被子。Broken bones were painstakingly pieced together and reshaped.断骨被十分小心地接合复位。She pieced together odds and ends of cloth.她将零头布凑成整块....
My career seemed to be on a downward trajectory.我的事业似乎在走下坡路。It is not difficult to sketch the subsequent trajectory.很容易描绘出它们最终的轨迹.The path followed by a projectile is called its trajectory.抛物体所循的路径称为它的轨道....
In my experience a straight substitution of carob for chocolate doesn'twork.根据我的经验，用角豆制品直接代替巧克力行不通。We use saccharin in substitution for sugar.我们用糖精代替糖.Substitution, No.3 for No.4.换人,4号下, 3号上....
她沦落到要靠偷窃来养活饥饿的家人。She is reduced to stealing to feed her hungry family.利比里亚从未沦落为欧洲强国的殖民地。Liberia was never colonised by the European powers.他固执地拒绝告诉她自己是如何沦落到这种地步的。He stubbornly refused to tell her how he had come to be in...