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...
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...
重写这一节, 正确地加标点.Rewrite the passage, correctly punctuated.发短信时,你坚持要把单词拼对,要拼全, 还要在句子间加标点.You insist on spelling words correctly and use full, punctuated sentences in text messages....