you read the dosage on the label,

阅读标签上的使用剂量说明
it will say something like

它会这么说
'if you're over 12 years old you take one dose

如果大于十二周岁则服用某个剂量
and if you're under 12 you take another dose.'

如果不满十二周岁服用另一个剂量
So, size of the person or age of the person

所以人的体型或者年龄
is an important determinant of how much dose you take.

是决定服用剂量的重要因素
Gender is often an important determinant,

性别通常也是一个重要的决定因素
your overall state of health is an important determinant,

你总体的健康状况也是一个重要决定因素
and you can't know those things for everybody.

而且你不可能知道每个人的信息
You could go on and on in this list and so you--

你可以将这个列表继续列下去
one individual might be more sensitive to doses of the drug than another.

某个体可能对药物剂量更敏感
If you're introducing all the drug at one time intravenously

如果你通过静脉一次注入所有药物