Please ensure all punctuation marks are in SBC case.

请确保所有标点符号都是全角的。

Learn to use the punctuation marks.

学习使用标点符号。

Inadequacy and Demand:the Grammatical Functions of Punctuation Marks;

句号：表示句子完结的标点符号。

Punctuation marks should not be taken lightly, sometimes the use of a wrong punctuation mark can literally change the meaning of a sentence.

不要小看标点符号，有时候误用一个标点符号确实可以改变一句话的意思。

Avoid the use of complicated punctuation marks such as parentheses and hyphens.

避免使用括号、连字符此类复杂标点。

Avoid the use of complicated punctuation marks such as parentheses and hyphens .

避免使用括号、连字符此类复杂标点。

The advantage of using punctuation marks is that you can make faces with them.

用标点的优点是你可以用它们来做鬼脸。

Operating range of words in 100 words or less, including punctuation marks.

经营范围字数在100个字以内，包括标点符号。

Therefore, it is very important to learn and use well English punctuation marks.

学好、用好标点符号是提高英语学习基础能力的重要内容。

The keys include letters, numbers, punctuation marks, and some special characters.

键包括字母键、数字键、标点符号键和一些特殊字符。