shift n.轮班职工；班；轮班。
pick up v.捡起；收集；继续；得到；接人；偶然结识；站起，扶起；学会；逮捕；振作精神。
①to get better, stronger, etc.; to improve
②(informal) to start again; to continue
③(informal, especially North American English) to put things away and make things neat, especially for somebody else

【例句】
As the night shift leave/leaves, the day shift arrive/arrives.
夜班工人下班时，白班工人来上班。

Are you on the night shift or the day shift? (= Do you work during the night period or the day period?)
你上夜班还是白班？