寄一封航空信 meaning in English

send a letter by airmail

What is the postage for an air letter
寄一封航空信的邮费要多少？
I ' ll mail a letter to u . s . a . by airmail
我要寄一封航空信到美国。
Can you tell me how much it costs to send a letter air mail from here to …
能不能告诉我，从这儿寄一封航空信到… …要多少邮资
Can you tell me how much it costs to send a letter airmail from here to new york
请您告诉我，从这儿寄一封航空信到纽约需要多少时间？