由于在上面提到的两个原初本质性秩序之外，没有必要再添设其他，因此我们只设定这两个。

Since there is no apparent need, then, for assuming any primary essential orders beyond the two already mentioned, they alone are to be assumed.

仅仅只要在自家花园、草坪上添设一个鸟屋或者自动喂食器就能迎来不少鸟类访客，其中很多可能你并不认识。

Simply adding bird houses or bird feeders to your garden or lawn will introduce you to a variety of birds, many of which you may never have noticed.