海上

at sea; on the sea

♦ ~风暴 a storm at sea

♦ ~作业 operation on the sea

♦ ~空间 air space above the sea

♦ ~霸权 maritime (or naval) hegemony

~保险 marine (or maritime) insurance~补给 sealift; seaborne supply~封锁 naval blockade~交通 maritime traffic~贸易 marine trade~油田 offshore oil field~遇险信号 signal of distress; GMDSS~运输 marine transportation