n.水下通氣管；通氣管
vi.用通氣管潛航
With a snorkel, however, a diver can stay under water for quite a long time. 可是，潛水員攜帶一根通氣管就可以在水下呆很長(zhǎng)時(shí)間。
n.潛水
動(dòng)詞snorkel的現(xiàn)在分詞.
n.使用水下呼吸管潛游
