It might be a good idea to mail the letter first class.
通过一级邮递寄这封信也许是个好主意。
If you send your letter first class it will get there quicker.
要是你按第一类邮件寄，这封信就会到得快些。
Capitalize the first letter of each word that appears in a class or interface name.
对于类和接口名称只对每个单词的第一个字母大写。
Starting today it will cost you more to mail that first class letter.
从今天开始，第一类邮寄信件的邮寄费将要上涨。
Starting today it will cost you more to mail that first class letter.
从今天开始，第一类邮寄信件的邮寄费将要上涨。
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