Fill in your answers in capital letters, not small letters.
答案用大写字母填写,不要用小写字母。
Capital letters specify set names, numbered small letters specify set members, and curly brackets containing set members specify the sets themselves.
我用大写字母指定集合名称,用编号的小写字母指定集合成员,用里面包含集合成员的花括号指定集合本身。
Fill in your answers in capital letters, not small letters.
答案用大写字母填写,不要用小写字母。——《牛津高阶英汉双解词典》。
Restriction enzymes have names, The names all look - they're all italicized and they're capital letters and small letters so that they won't be easy for you to understand, but they are - if you know the nomenclature, easy to understand.
限制性内切酶有自己的名字,名字看起来都很--,都是斜体的,大写小写字母混合,你们不太容易理解,但它们都是--如果你懂命名法,是很容易理解的
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