Breechblock
n. 炮闩, 闩体, 尾栓
🗣️ 情景例句
Study hard and study everyday, if you want to master the English language.
如果你想精通英语的话，就得每天刻苦学习。
Is the plane leaving?
飞机要起飞了吗？
Well, I can't leave before nine. I have a lot of work to do.
嗯，我9：00以前离不开。我有很多作业要做。