| 单词 | 炮耳 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔chase〕The part of a gun in front of the trunnions.炮膛：炮上的炮耳之前的部分美国传统〔trunnion〕A pin or gudgeon, especially either of two small cylindrical projections on a cannon forming an axis on which it pivots.炮耳：轴或耳轴，尤指炮两边形成旋转中轴的两个圆柱形小突起美国传统 |
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