n.<南非>金合欢丛生的草原
The roses are thorny. Take care not to prick your hands.
玫瑰有刺,小心扎手.
The boys argued over the thorny points in the lesson.
孩子们辩论功课中的难点.
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.