With trembling fingers, he removed the camera from his pocket.他手指哆嗦着从口袋里取出相机.I was shaking all over, trembling like a leaf.我像风中的落叶一样浑身发抖。Trembling, she put the phone down. It rang again almost immediately.她颤抖着放下电话听筒，电话几乎...
In fact, Richard Savage had known Edward Bellamy a scant five hours.实际上，理查德·萨维奇和爱德华·贝拉米相识才仅仅 5 个小时。Did you say Edward Pratt?您是说EdwardPratt 吗 ?Do you know the reason of King Edward the 8 th's abdication?你知道英王爱德华八世放弃王...
本文根据实验事实,阐述了烷基的负诱导效应.In this paper, negative induction effect of alkyl is discussed base on the experiment facts.季铵盐中烷基的转移具有较好的选择性,其优先顺序为:苄基>伯烷基>仲烷基.Excellent selectivity in alkyl transfer was noted in the sequence of Ph...