ad.

1. 按照自然规律
2. 身体上
   After his vacation he was in fine condition both physically and mentally.

   度假之后，他的身体状况和精神状况都很好。

3. 实际上；完全地，全然
   It is physically impossible.

   那是根本不可能的。

   Some religions suppose that there is a Heaven physically above the earth.

   一些宗教认为地球上面真有一个天国。