Concavation
凹度
🗣️ 情景例句
She is a terrible student.
她是一个极糟的学生。
I heard you'd been sick.
听说你身体不舒服。
You will enjoy your stay here if you pay attention to our street signs.
如果您对我们街上的标牌稍加注意，您在此会过得很愉快的。