Semiarc
n. 半弧
🗣️ 情景例句
I just retired. Had my own company.
我刚退休。我原来开一家公司。
Do I have to reserve a seat?
我一定要预订座位吗？
the total absence of fishing boats around the oil rigs.
钻井平台周围根本没有捕鱼船只。