1、I saw the PLA men file away a moment ago.
剛才我看見解放軍戰(zhàn)士列隊(duì)出發(fā)。

2、You have to file away for hours to get this metal smooth.
你得銼上幾個(gè)小時(shí)才能使這金屬變得光滑。

3、I admire the ingenuity and file away the idea for possible use in the future.
我佩服他們的想象力，并把這個(gè)想法歸檔以備將來(lái)之需。