airmailing

airmailing vs. mailing：

• airmailing：特指通过飞机寄送邮件，强调速度和国际传递。
• mailing：一般指任何形式的邮寄，包括地面和航空，不特别强调传递方式。

Airmailing is the process of sending letters and packages via airplanes to ensure quick and efficient delivery. 

1. 原形：I need to airmail this document to New York.
   中文：我需要将这份文件通过航空邮件寄到纽约。
2. 过去式：She airmailed the package yesterday.
   中文：她昨天寄出了这个包裹。
3. 过去分词：The letter was airmailed to ensure it arrived on time.
   中文：这封信通过航空邮件寄出，以确保它按时到达。
4. 现在分词：He is airmailing the invitation to his friends overseas.
   中文：他正在将邀请函通过航空邮件寄给海外的朋友。
5. 第三人称单数：She airmails important documents to her clients.
   中文：她通过航空邮件将重要文件寄给客户。

Airmailing is the process of sending letters and packages via airplanes to ensure quick and efficient delivery. This method is often used for international mail due to its speed compared to ground transportation. When airmailing, senders usually affix a special airmail sticker or stamp to the items, indicating the preferred method of transportation. The act of airmailing involves multiple steps, including preparing the mail, labeling it appropriately, and delivering it to an airmail processing center.