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4. arrive at/in + n. 到达
