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And it gets worse.By 2020, first-class mail volume is expected to drop by half.

2020年的情况会更糟，一类邮件数量预计将减少一半。

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And it gets worse. By 2020, first-class mail volume is expected to drop by half.

2020年的情况会更糟，一类邮件数量预计将减少一半。

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That wasn't nearly enough to make up for a 3.1% decline in first-class mail, still the main revenue driver.

WSJ: Postal Service Registers $5.2 Billion Loss

The Postal Service said it would end Saturday first-class mail delivery beginning Aug. 5 in an effort to curb losses.

WSJ: What's News: World-Wide

The U.S. Postal Service is moving forward with plans to make cuts to its first-class mail next spring, as it shutters about half of its 487 mail processing centers.

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