Read Edit View history 海沟 hǎigōu ocean trench Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 海沟/海溝 · hǎigōu · ocean trench 2026/03/04 海沟 / 海溝 hǎigōu ocean trench marine trench 马里亚纳海沟是世界上最深的海沟。 noun created sense Mar 4, 2026, 02:25 AM