海上: at sea; on the sea; seaborne 短语和例子海上风暴 a storm at sea; 海上霸权 maritime hegemony; 海上保险 marine insurance; 海上避撞规则 rules of the road at sea; 海上补给 sealift; seaborne supply; supply by sea; 海上采油 of
海上危险: danger of the seasdangers of the seasmarine adventuremaritime perils
危险: dangerous; perilous; risk; peril; danger 短语和例子发出危险信号 send out a danger signal; 冒生命危险 at the risk of one's life; peril one's life; 脱离危险 out of danger; 在危险中 in danger of; in the time of peri
