在1,2--二亚甲基环丁烷中并不发生这种现象.This phenomenon does not occur with 1 - 2 - dimethylenecyclobutane.环丁烷主要成 “ 蝶式 ” 构象存在.Cyclobutane exists predominantly in a " butterfly " conformation.四 号 溶剂主要成分为液化丁烷.The main component in 4 # solv...
她一直勇敢地坚持着充实满足的生活。She has courageously continued to lead a fulfilled life.一篇详尽的描写就是一篇充实完整的描写.A comprehensive description is one that is full and complete.先搭好架子, 再充实内容.First make an outline, and then fill in the content....
Tremolite laths and serpentine minerals are present in places.有的地方出现透闪石板条及蛇纹石.We will order some laths for furnishing the basement.我们将订购一些木板条来装修地下室.Building laths cut in half and sharpened on one end make satisfactory st...
Instead of snacking on crisps and chocolate, nibble on celery or carrot.不要把薯片和巧克力当零食来吃，要吃些芹菜和胡萝卜。a stick of celery一根芹菜I have a thing around celery. I can't stand it.我很讨厌芹菜, 我无法忍受它(的味道)....