副詞 afield:

1. far away from home or one's usual surroundings- R.A.Hall
   同義詞：abroad
2. in or into a field (especially a field of battle)
3. off the subject; beyond the point at issue

1. Don't go too far afield or we might lose you.
   不要走得太遠(yuǎn)，要不然我們會找不到你的。
2. Missionaries went far afield to propagate their faith.
   傳教士到遠(yuǎn)方去傳播其信仰。