Conelet-drop is at a maximum when shoot extension occurs at a time close to anthesis . 在接近开花而营养枝又在伸长时，球花早落的数量达到最多。
Here are five points that help me learn-and remember-the whole families of words at a time . 这里有五点要领可使我一下子学到--也记住--不少个字的整个语族。
Export earnings have fallen at a time when private capital inflows and domestic savings have slumped . 就在私人资本流入和国内积累暴跌之际，出口收入减少了。
Why bring it up now, at a time when we are happy and cozy and don't want to hear unpleasant things ? 这会儿我们正在兴头上，不想听到不愉快的事，提这些事干嘛？
The apartments were so irregularly disposed that the vision embraced but little more than one at a time . 这些房间的位置排列都极不规则，每次只能看见一个房间的景象。
Some auto plants have closed for days or weeks at a time to bring output in line with sales . 为了减少产量适应销售情况，有些汽车厂不时暂停生产，关闭几天或几个星期。
Suber flushes early and pupas are already found at a time when the caterpillars on ilex are just hatching . 栓皮栎发叶早，当常绿树上的幼菌虫还处在孵化阶段时，栓皮栎上的已成了蛹。
I should be sorry to see an unsettling change made at a time when the battle is at its climax, swaying to and fro . 当战事正酣、胜负未卜的时候，进行摇摆不定的变革，实非我的意愿。
She carried them two at a time to her family, paddy first, then frank, and so on down to meggie, with herself last . 她一次能拿两盘，首先给帕迪，然后给弗兰克，依次轮到麦琪，最后是她自己。
It is particularly gratifying to me to enter on the discharge of these duties at a time when the united states are blessed with peace . 使我感到特别满足的是，就在美国深受和平之惠时，我开始履行这些职责。
