【机】 气孔
在线英汉词典

blow-hole的短语、例句：

blow-hole n 1 vent for air, smoke, etc in a tunnel （隧道的）通风口. 2 hole in the ice through which seals, etc breathe （海豹等用以呼吸的）冰窟窿. 3 whale´s nostril situated at the back of its skull （鲸鱼的）鼻孔.