Subtriangular
近似三角形的
🗣️ 情景例句
Come on, Philip!
快点， Philip。
I haven't the slightest idea what you're talking about.
我一点也不知道你在说些什么。
Grandma is ill, she said. I must take her to hospital.
“奶奶病了，”她说，“我必须送她去医院。