| 释义 |
no obj. 1(of a submarine) dive rapidly and steeply to a deeper level in an emergency （潜水艇在紧急情况下）紧急下潜, 速潜。
1.1(of an aircraft) plunge steeply downwards into a crash （飞机）俯冲坠毁。
a steep dive of this kind by a submarine or aircraft （潜水艇的）紧急下潜, 速潜; （飞机的）俯冲坠毁。
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