Specialises
vi. 专门从事, 专攻（specialise的第三人称单数形式）
🗣️ 情景例句
This job is hard work.
这活儿太累人了。
Don't be offended by his haste, he is a very busy man.
别为他的轻率介意，他是个大忙人。
That's a big box. Is it heavy? Please let me help you.
这是个大盒子。重吗？让我来帮你。