This article introduced a method for preparing α - chloro - isobutylaldehyde , in order to explore a practical chloration of oxo - compound. 本文介绍了制备氯代异丁醛的方法, 其目的在于探索羰基化合物的一种实用的氯代方法.
我像你这么大时，要步行5英里去上学。When I was your age I walked five miles to school.她不得不疲惫地步行穿过伦敦，这让她相当生气。She was rather cross about having to trail across London.我们已安排大家在导游的带领下步行游览这座城市。We've arranged a walking tour of the city wit...
The Advertising Standards Authority accused estate agents of using blatant untruths.广告标准管理局控告房地产代理商使用无耻的谎言。At times the arrogance of those in power is quite blatant.有时那些当权者颇为傲慢嚣张。Outsiders will continue to suffer the mos...