I'll send the original to you by post.

我将把原件邮寄给你。

Competition winners will be notified by post.

将发信通知竞赛的优胜者。

He supported himself by means of a nearby post.

他倚在旁边的一根柱子上。

Do not send them your application by fax, for instance, if companies ask for it by post.

比如，如果公司要求邮寄申请书，就不要把申请书通过传真机传输给他们。

The vase was quite fragile so we had to wrap it in soft material before we send it by post.

这个花瓶很易碎，所以我们在邮寄前必须用软材料把它包起来。