I do not believe the study result.

What is sample size?

Any selective sample?

How long is the study covered?

It is just aligning common sense.

所有跟帖: 

去放狗查一下吧, 真有這樣的研究 -quicktrade- 給 quicktrade 發送悄悄話 (191 bytes) () 09/08/2024 postreply 16:33:24

請您先登陸,再發跟帖!