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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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。

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By convention, the name of a managed bean is the same as the class name, with the first letter of the class name converted to lowercase.

按照约定，托管bean的名称与类名相同，类名的第一个字母被转换为小写。

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The proposed Forever stamp is good for a first-class letter no matter when you stick it on the envelope.

FORBES: The Bupkes Bond

Although a first class stamp was placed on each letter, it did not cover the total postage cost, so they were held at the sorting office by Royal Mail.

BBC: Wrong postage on Weymouth Pavilion redundancy letters