Semiannular
a. 半圆形的
🗣️ 情景例句
May I pay in cash?
可以付现金吗？
Ouch! I fell down and cut my knee!
好痛呦！我跌倒割伤了膝盖！
All the students are expert drivers, but before they drive any of the buses, they will have to pass a special test.
所有的学生都是开车的能手，但在驾驶公共汽车之前，他们必须通过一项专门测验。