Old English þornig; see thorn + -y (2). Figurative sense is attested from mid-14c. Related: Thorniness. Similar formation in Dutch doornig, German dornig.
权威例句
1. The young captain is pondering over a thorny problem.
年轻的上尉正在思考一个棘手的问题.
2. The roses are thorny. Take care not to prick your hands.
玫瑰有刺,小心扎手.
3. The boys argued over the thorny points in the lesson.
孩子们辩论功课中的难点.
4. The dog hurt one of its pad when It'stepped upon a thorny path.
这只狗在踏上一条有荆棘的小路时,伤了一只爪垫.
5. The dog hurt one of its pad when it stepped upon a thorny path.