How much is an airmail letter to Japan?
寄一封航空信封到日本要多少钱？
How much is an airmail letter to New York?
寄到纽约的航空信要贴多少邮票？
How much does it cost to send an airmail letter to Australia?
寄往澳洲的航空信要多少钱？
How long does it take to send an airmail letter to China?
寄封航空信到中国要多长时间？
How long does it take to send an airmail letter to China?
寄封航空信到中国要多长时间？
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