airpost

She sent the birthday gift by airpost to ensure it arrived before the weekend.

用法提示：此处 'airpost' 作为名词，表示 '航空邮件'，用于描述邮寄方式。

The company uses airpost for all its international correspondence.

用法提示：此处 'airpost' 作为名词，是 'airmail' 的同义词，指代航空邮政服务。

I prefer airpost over sea mail for documents that need to arrive quickly.

用法提示：此处 'airpost' 作为名词，与 'sea mail' 对比，强调其快速的特点。