b grade

基本解释

Some B-grade movies are very good, but most of them are not worth watching.
有些B級片很不錯，不過大多數片子不值得去看。
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It’s a B-grade slasher directed by John Ottman about a film school where fiction and reality blur.
約翰·歐特曼導縯的一部B級恐怖片，故事發生在一所電影學校，在那裡，現實與小說的邊界模糊了。
Through the analysis, pointed out the key is the wire rod chemical composition is even when produces the B-grade steel wire for cotton packaging.
通過分析，指出在生産B級棉花打包鋼絲時，關鍵是線材的化學成分均勻。化學成分對鋼的內部組織、性能及成品質量起決定作用。

Getting a grade like a B-plus or a C-minus adds or subtracts a few tenths of a point.
So my grade if we both put Alpha is B-, if we both put Beta, was B+.
如果我們都選α我得B-,都選β我得B+
耶魯公開課 - 博弈論課程節選

In Shanghai, for instance, rents this year have increased 18% for grade-A and grade-B buildings in the popular Puxi district as vacancies have fallen to a ten-year low of around 7%, according to Jones Lang LaSalle, a global property consultant.
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A B-grade person or thing is one that you consider to be inferior or of poor quality.