You can finish 50 order in a day _ robots can finish 500 orders i_其他解答

You can finish 50 order in a day _ robots can finish 500 orders in an hour

人气：413 ℃　时间：2020-05-09 04:53:15

解答

while 不能用but,若用but要加逗号,while 表示的是轻微的转折