The elevator creaked to a halt at the ground floor.电梯嘎吱一声停在了一层。The breeze grew in strength, the flags shook, plastic bunting creaked.微风渐强，旗帜舞动起来，塑料彩纸吱吱作响。The bed-springs creaked.床垫的弹簧嘎吱作响。...
在特殊的酸催化中, 不离解的酸不起作用.In specific acid catalysis, the undissociated acids do not contribute.所有的原子和分子系统都受光致电离和光致离解的影响.All the atomic and molecular systems are subject to photoionization and photodissociation.后者是由二氧杂环戊烷中活化较弱...
I've been hearing a lot about your doings recently.我最近不断听到很多关于你的所作所为。Please tell me about all your doings in London.请把你在伦敦做的事情全讲给我听听吧.I never heard of such doings.我从未听说过这些事....
A permanent cure will only be effected by acupuncture, chiropractic or manipulation.只有针灸、脊椎指压治疗或者推拿术才能实现彻底治愈。The union between the two countries was effected three years ago.两国合并是三年前实现的.The medicine effected nothing.此药不灵...
I started cropping my beans in July.我7月份开始收割豆类作物。The sheep were cropping on the grass.羊群在吃青草.Be careful when you walk in this field; there are lots of rocks cropping out.你在这块地行走时要小心, 地面上有许多露出来的石头....