黑体字的英文：
bold-face
boldface

boldface type
黑体字

Bold type is often used for vectors.
黑体字常用来表示向量。

This article is printed in Gothic
这篇文章是用粗黑体字印刷的。

The following words in bold are in the text about Harry Potter.
下面用黑体字标的词都是课文中和哈利波特有关的词语。

She is a bold piece.
她是一个放荡的女人。

The Government resolved on a bold policy.
政府决定采取大胆的政策。

This is bold and exuberant cooking.
这是大胆而又精彩的烹饪。

His face was a decadent face.
他的脸是一张颓废派艺术家的脸。

Face the music.
不得不接受惩罚、承担后果,必须承受出现的局面。

Eventually, he came face to face with discrimination again.
最后，他再次直面歧视。

This is a bold-faced lie.
这是个厚颜无耻的谎言。

Obviously it was Anne's considered opinion that Mavis was a bold-faced liar.
安妮认为梅维斯是个厚颜无耻的骗子，这显然是经过一番深思熟虑后才得出的看法。

boldface italic type is used to mark very important terms when they are first defined
对于特别重要的术语，第一次给它们下定义时，用黑斜体字表示。