動詞 discern:

1. detect with the senses
   同義詞：recognize, recognise, distinguish, discern, pick out, make out, tell apart

形容詞 discerning:

1. having or revealing keen insight and good judgment
2. unobtrusively perceptive and sympathetic
   同義詞：discreet
3. quick to understand- Nathaniel Hawthorne
   同義詞：apprehensive
4. able to make or detect effects of great subtlety; sensitive

1. He was just able to discern the road from the dark.
   他在黑暗中只能勉強(qiáng)辨認(rèn)出道路。
2. She is a very discerning art critic.
   她是位眼光敏銳的藝術(shù)評論家。

dis.cern.ing

adj.（形容詞）
Exhibiting keen insight and good judgment; perceptive.
有眼力的；有判斷力的：展現(xiàn)敏銳的眼力或辨別力好的判斷的；有洞察力的

【引伸】
discern.ingly
adv.（副詞）