n.水下通气管；通气管
vi.用通气管潜航
With a snorkel, however, a diver can stay under water for quite a long time. 可是，潜水员携带一根通气管就可以在水下呆很长时间。
Seabreacher has a long snorkel concealed within the top fin which provides an airflow into the boat. 海豚快艇的顶鳍内部埋设有一根长的通气管，这根通气管为飞艇提供空气。
