noun 下载 🔗分享 火门,点火孔。 A small hole through which the propellant charge of a cannon or muzzleloading gun is ignited. Examples : "The reenactor cleared the touchhole of his musket before priming it with powder for the demonstration. " 在演示之前,那位重演者先清理了他燧发枪的火门(点火孔),然后装填了引火药。 part weapon military technology machine history 与AI对话词汇游戏阅读练习