I would like to have a post box.

我想开一个邮政信箱。

Put this in the post box.

把这个放进信箱里。

Size of the post box: Choose how large, in number of lines, you want for the post content textbox.

选择你的文本框的大小，可以包含多少行。

'Snail mail' is the traditional letter delivering service in which you have a postman and a post box.

所谓的“蜗牛邮件”就是传统的邮寄信件，没有邮递员也没有邮箱。

A few days ago I added my local curry house to the map (next to a post box someone else had already inserted).

几天前，我将我的本地咖喱菜屋添加到地图上(旁边的一个邮筒别人已添加了)。