① by day意為“在白天”,與 by night(在夜間)相對(duì)。
Most of us work by day,and only a few work by night. 我們大多數(shù)人上白班,只有少數(shù)人上夜班。
② by the day意為“按天計(jì)算”。同樣的表示法還有:by the week(按周),by the month(按月),by the year(按年)。
They are paid by the day while we are paid by the week. 他們的工資按天發(fā),而我們的工資按周發(fā)。