还可以使用大小写混合形式表达关键字。

You can also use a mixture of uppercase and lowercase to express a keyword.

youdao

选项可以是大写、小写或大小写混合形式。

You can write options in uppercase, lowercase, or mixed case.

youdao

大自然，具有从动物到藻类等多种多样的表现形式，也同样能处于数字混合形式中。

Nature, in multiple manifestations ranging from animal to algae, is also thrown into the digital mix.

youdao

But, if you look more carefully, you will find that this is a blend of three different forms of carbon.

但是，如果你们再认真一点，会发现,它是三种形式的碳的混合物。

麻省理工公开课 - 固态化学导论课程节选