nostril ·noun

要疏通堵塞的鼻子，可以尝试通过一个鼻孔缓慢吸入蒸汽。

To clear a blocked nose, try breathing in steam slowly through one ___nostril.

氨水刺鼻的气味立刻充满了他的两个鼻孔。

The pungent smell of ammonia immediately filled both his ___nostrils.

比赛前，那位运动员张大鼻孔，深深吸了几口清新的山间空气。

The athlete flared his ___nostrils wide, taking in deep breaths of the crisp mountain air before the race.