英语翻译：
formerly; in the past; onward
相关词条：
1.onwards 2.previously 3.precede 4.antecedently 5.antecedence
例句：
- 下一节目五分钟後开始，现在先播放些音乐。
The next programme starts in five minutes: in the meantime, here's some music.
- 我因有约在先，所以未能参加这个会。
I was unable to attend the meeting because of a prior engagement.
- 有约在先，我恐怕不能与你共进晚餐。
I fear that a prior engagement will prohibit me from joining you in dinner.
- 在先，居前在时间上居前或来得早
A preceding or coming earlier in time.
- 回针缝在先前缝的一针中间加缝的一针，以便使针脚的交错重叠为原来长度的一半
A stitch made by inserting the needle at the midpoint of a preceding stitch so that the stitches overlap by half lengths.
分词翻译：
在的英语翻译：
be; depend on; exist; at; in
【计】 plot on X axis; search in
先的英语翻译：
ancestor; before; deceased; earlier; in advance
【医】 fore-