| 释义 |
Japan TrenchNONE（无词性）- A depression in the floor of the northern Pacific Ocean off northeast Japan. It extends from the Bonin to the Kuril islands and reaches depths of more than 9,000 m (30,000 ft).日本海沟：日本东北海沿岸太平洋北部的海底深沟。它从小笠原群岛延伸至千岛群岛，最深处达9,000多米(30,000英尺）
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