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...
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....
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...