Isopentyl lactate was synthesis from acid and isopentyl alcohol in the presence of ferric chloride hexahydrate.在六水三氯化铁存在下可以由乳酸和异戊醇合成乳酸异戊酯.Rather than politely lobbying politicians, Gay Dignity will be making its presence...
We had kept its presence hidden with a strategically placed chair.我们用一张摆放得很巧妙的椅子将它隐藏了起来。The presence of a star is already apparent in the early film.在早期影片中已经显露出了明星相。Nobody was allowed to eat in the Empress Dowager's...
他们正好踩上了饵雷，结果被炸得粉身碎骨。They walked right into a booby-trap and got blown to smithereens.他们在小路上挖深沟设饵雷。They dug trenches in their path and set booby traps.警察在这个地区探测饵雷。Police were checking the area for booby traps....
我已经写好这封信的草稿。I've made a rough draft of the letter.我知道这篇草稿需要校订。I know that this draft text will need to be edited.说一句不打草稿的话, 我认为你是对的.Speaking off the bat, I'd say you were right....