We couldn't understand them because they were talking in Chinese.
我们听不懂他们在讲些什么，因为他们说的是汉语。
Garlic is widely used in Chinese folk medicine.
大蒜广泛应用于中国民间医药。
Only thirty students graduated in Chinese last year.
去年只有三十名学生获得汉语学士学位。
I am studying Chinese.
我正在学中文。
I'm not crazy about Chinese food.
我并不十分热衷于中餐。