1. put down 放下
shut down 把…关上
cut down 砍掉
come down 下来、落下
slow down 减缓、放慢
sit down 坐下
write down 写下
get down 下来,降落
2. after all 毕竟.终究
after that 于是.然后
day after day 日复一日地
one after another 相继.挨次
soon after 不久以后
the day after tomorrow 后天
3. come up with 找到、提出
catch up with 赶上
wake up 弄醒、醒来
send up 发射
open up 开设、开办
grow up 长大
pick up 拾起、捡起
hands up 举手
eat up 吃光
clean up 打扫干净
give up doing sth.=stop doing sth. 放弃做某事
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