When the U.S. implemented standardized postage rates, the cost to mail letters became more predictable and less expensive.
当美国实施标准化邮资费率时，邮寄信件的费用变得更可预测且更便宜。
| 单词 | postage rates |
| 释义 |
postage rates
原声例句
99%不为人知的故事 When the U.S. implemented standardized postage rates, the cost to mail letters became more predictable and less expensive. 当美国实施标准化邮资费率时，邮寄信件的费用变得更可预测且更便宜。 |
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