Keep sharp lookout for signals of vessel in distress and report.
保持对遇险船信号仔细瞭望并报告。
Using all kinds of manners to keep a sharp lookout at all times when passing Gulf of Aden.
过亚丁弯时，在任何时侯都要用各种手段进行有效正规了望。
Using all kinds of manners to keep a sharp lookout at all times when passing Gulf of Aden.
过亚丁弯时，在任何时侯都要用各种手段进行有效正规了望。
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