通过一个鼻孔吸气。

Breathe in through one ___nostril.

当他终于到达房子并设法打开门时，一股霉味扑鼻而来。

When he finally reached the house and managed to open the door, a musty stench assaulted his ___nostrils.

医生检查了她的鼻孔是否有堵塞。

The doctor examined her ___nostril for any obstruction.