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1·Three air letter sheets, please.

请给我两张航空信笺。

2·How much is an air letter?

寄航空邮件要多少钱？

3·By air to vancouver thence by surface. all postal services are temporarily suspended except ordinary and registered air letter mail to berbera, borama, burao and hargeisa.

除寄往柏培拉、博拉马、布尔奥及哈尔格萨的普通及挂号航空邮件外，所有邮政服务暂时停止。

4·As I put the last letter down, there is a deafening bang and the air conditioning unit fails.

分，好好让她瞧瞧。当我放下最后一个字母时，一声巨响，震耳欲聋，原来是空调坏了。

5·We sent the letter by air mail.

我们通过空邮寄信。

6·I shall send the letter by air.

我要由航空寄这封信。

7·Old hands do not shake or cramp when the letter is written on the air.

在空中写信，我这衰老的手不会发抖也不会抽筋。

8·Please send the letter by air.

请寄航空信件。

9·We sent the letter to them by air.

我们通过航空寄那封信。

10·Airlines designated two-letter IATA airline designator code, but there are many regional airlines or low cost airline company is not the international air transport association members.

各航空公司指定的两个字母的IATA航空公司代码，但是有许多地区性的航空公司或者低成本航空公司并非国际航空运输协会的成员。