石墨层中的碳原子相互连接形成碳环。In graphite sheets, carbon atoms bond together in rings.可分离的碳环化合物环内含七个或七个以下的碳.Isolable carbocyclic compounds contain seven or fewer carbons in the cycle.制取四碳环化合物的特殊方法是在第三十二章中阐述的.Special methods for four ...
她对保持房屋清洁有点神经质。She became neurotic about keeping the house clean.她神经质的傻笑把我惹火了.Her nervous giggles annoyed me.别这么神经质——我不是在批评你.Don't be so sensitive — I wasn't criticizing you....
When he gets drunk he always reminisces about his life together with Mary.他喝醉时总要忆起他跟玛丽在一起的生活.Always listen for things that your partner reminisces about and jot them down somewhere.关注对方追忆的事物,并记录下来....
My skin was hard and scaly and I itched.我的皮肤又硬又粗糙，而且还很痒。Seeing the children playing ping - pong , he itched to have a go.他看到孩子们打 乒乓, 不觉技痒.He could hardly sIt'still and itched to have a go.他再也坐不住了,心里跃跃欲试....