他机智诙谐,具有敏锐的商业头脑。He was witty, amusing and gifted with a sharp business brain.布兰德敏锐的耳朵听出了口音。Brand's keen ear caught the trace of an accent.观察敏锐的步行者可能在这一路段看到赤鹿。Observant walkers may see red deer along this stretch of ...
The hydroxyl groups can be changed into esters , ethers , acetals and ketals, etc.最常用的羟基保护基可归纳为三类:酯类 、 醚类和缩醛或缩酮类.Eight acetals ( Ketals ) were synthesized under the optimal conditions.在最佳条件下,合成了八个缩醛 ( 酮 ) 化合物.The yields ...
她用偷来的绷带迅速把他绑紧,并塞住了他的嘴。She trussed him quickly with stolen bandage, and gagged his mouth.射击一开始,大家都用手指塞住耳朵.Everyone put their fingers in their ears when the shooting started.她用脱脂棉塞住了耳朵.She stuffed her ears up with cotton w...
to make cynically callous.使冷漠They cynically tried to trade off a reduction in the slaughter of dolphins against a resumption of commercial whaling.他们见利忘义地试图以减少屠杀海豚数量作为交换条件,重启商业捕鲸。I firmly believe our strategy is being de...