下一節(jié)目五分鐘後開始，現(xiàn)在先播放些音樂。 The next programme starts in five minutes: in the meantime, here's some music.
我因有約在先，所以未能參加這個會。 I was unable to attend the meeting because of a prior engagement.
有約在先，我恐怕不能與你共進晚餐。 I fear that a prior engagement will prohibit me from joining you in dinner.
在先，居前在時間上居前或來得早 A preceding or coming earlier in time.
回針縫在先前縫的一針中間加縫的一針，以便使針腳的交錯重疊為原來長度的一半 A stitch made by inserting the needle at the midpoint of a preceding stitch so that the stitches overlap by half lengths.
