Ans：
依據國動(NCB)官網，其小鼠係依週齡販售。小鼠在離乳前母鼠照顧程度不同，體重有個體差異為正常現象。若實驗祈望特定體重範圍，請於訂購時備註欄位註明所需重量範圍，它們會盡量滿足需求，但恕無法保證提供。

Ans:
According to the National Center for Biomodels (NCB), mice are sold by age. Weight variations are normal due to the level of care provided by their mothers before weaning. If your experiment requires a specific weight range, please write down your desired weight range in the note when ordering it. They will do their best to fit your request, but cannot guarantee it.