Specilize
v. 特殊化,专攻,详述
🗣️ 情景例句
The welcome sign is up:
欢迎的标语已经弄好了：
Does he go out with the boy whose aunt is an operator?
与他在一起那男孩的姑妈是接线生。
After a short while he started directing films himself.
不久，他开始自己导演电影。