... 后发烟：after-fume 后撑脚：back lag 后备消防车;后备人员：reserve ...
双语例句
1
Forget the lag time of email or waiting for a call back.
不再需要无止境地等待电子邮件或者是电话回复。
2
Jet lag is tough and it may take a week or so go get back to normal.
时差反应很难受，你可能得花上一周或者更久才能回到正常状态。
3
Moving back and forth through artists and menus while the music was playing caused some ugly lag, as did even doing simple things like changing the volume.