People migrate to cities like Jakarta in search of work.人们为找工作而迁移到雅加达这类城市里。Wealthy people often migrate in winter to warmer and sunnier places.富有的人冬天常移往温暖而日照好一点儿的地方去.The whales migrate some 6,000 miles to breed and calve...
We had to drive like the clappers to get there on time.为了按时到达,我们开得飞快.Percussion instruments like drums and clappers are also sometimes included.还有一些打击乐器如鼓、板等.I've got to work like the clappers this morning.今天上午我得拼命地...
用 4- 氨基安替比林与 3- 甲酰基色酮 、 肉桂醛、茴香醛反应分别合成了3种新的席夫碱化合物.Three novel Schiff bases were synthesized using the reaction of 4 - aminoatipyrine with 3 - formylchromone, cinnamaldehyde and anisaldehyde.从茴香油生产茴香醛的废渣、废液中提取副产品茴香酸,合成茴香酸甲...