Smoothbore
n. 无膛线枪, 无膛线炮
🗣️ 情景例句
That's like closing the gate after the horse has bolted.
那无异于马后炮。
He most lives who lives most for others.
活著对别人贡献最多的人，活得最有意义。
You must look after it. Give it to Mr. Hu.
你一定要好好保管啊！让胡老师帮你拿着。