The betaine will collapse to the alkene only when these two functions are eclipsed.只有当这两个基团移至重迭位置时碘盐才能裂解为烯烃.The gramophone had been eclipsed by new technology such as the compact disc.激光唱片等新技术使留声机黯然失色。Our happiness was s...
如果天气不好，我就不拍照了。If the weather's no good then I won't take any pictures.游客无事可做，只能互相拍照。The tourists have nothing to do but take pictures of each other.今天在十字路口有大群的游客在拍照。Today at the crossing there were swarms of to...
It was an unbelievable moment when Chris won the gold medal.克里斯赢得金牌的那一刻令人不可思议。I still find this story both fascinating and unbelievable.我仍觉得这个故事既有趣又不太可信。I find it unbelievable that people can accept this sort of behaviou...
Many parents simply abdicate all responsibility for their children.许多父母对孩子简直是完全撒手不管。The old must abdicate new.老的必须让位于新的.If the king does not abdicate, he will have to be dethroned.如果国王自己不退位, 就必须把他赶下台....