top-notch <adjective> means "first-class," "top-tier," or "of very high quality." notch <noun> represents a "nick," "indentation," "step," or "rank." It is also used as a <transitive verb> meaning "to ...

as to is a slightly formal expression meaning "regarding" or "about." It is close to about or regarding, but it is often used when changing the topic or focusing on a specific point. Also, it is ...

单词 advance 的用法总结 Episode 240105 / 05 Jan 2024 Is 'advance' a noun, verb or adjective?

Sam is very happy in this episode of English In A Minute!