Now That you know the (many) ways to use a comma in a sentence, you’re on the right track to enhancing your writing with punctuation marks. 确保定期更改密码，以减少被盗的风险。同时，妥善保管好您的登录凭据，避免泄露给他人。 The comma is used in many contexts and languages, mainly to separate parts of a sentence such as clauses, and items in lists https://www.sbnation.com/users/hughescarlton