braces可数吗
的有关信息介绍如下:
Why do I have braces and wear glasses?
为什么我要系上背带戴上眼镜?
What if the dentist says my child needs braces?
牙医如果说孩子需要戴牙箍,怎么办?
Once they made him wear a brace but he fretted so he was downright ill.
有一次,他们让他戴上支架,但他焦躁不安,因此病得很重。
He took lessons, and had to wear a hip brace for a year.
他上了芭蕾课,还戴了一年的矫正器。



