Rehearse the moves of tightening an air mask and securing a flotation vest.
演练戴紧防毒面具和固定安全背心。
Detective Delaney entered the water without an air tank, but only his diving suit, mask and snorkel and approached a woman floating in a life vest, he said.
Delaney警探在只穿了潜水服、面具和通气管而没有带氧气罐的情况下入水向依靠救生衣漂浮在水中的一名女性靠近。
Detective Delaney entered the water without an air tank, but only his diving suit, mask and snorkel and approached a woman floating in a life vest, he said.
Delaney警探在只穿了潜水服、面具和通气管而没有带氧气罐的情况下入水向依靠救生衣漂浮在水中的一名女性靠近。
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