| 单词 | 射口 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔fire extinguisher〕A portable apparatus containing chemicals that can be discharged in a jet to extinguish a small fire.灭火器：一种装有化学药品的手提器械，经喷射口发出后可用来扑灭小型火灾美国传统〔subcaliber〕Smaller in caliber than the barrel of the gun from which it was fired. Used of projectiles.次口径的：指子弹、炮弹等发射口径小于炮口径的美国传统 |
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