Parasite populations have to stay within certain limits.

寄生虫数量必须保持在一定限度内。

He knew within certain limits how far the old Baron would go against family.

他知道在一定限​​度内老男爵会在多大程度上背叛家人。

A " free country" would be a nation where people are allowed to do what they want, within certain limits.

一个“自由国家” 将是一个允许人们在一定范围内做他们想做的事情的国家。

The position of the more perspicacious mercantilists was in this respect, as in many others, perfectly clear within certain limits.

在这方面，与许多其他人一样，更敏锐的重商主义者的立场在某些范围内是非常清楚的。

Moreover, he agrees that within certain limits labour in fact often stipulates, not for a given real wage, but for a given money-wage.

此外，他同意在一定限度内，劳动实际上经常规定，不是给定的实际工资，而是给定的货币工资。

The question of " tapering-off, " in abandoning such habits as drink and opium-indulgence, comes in here, and is a question about which experts differ within certain limits, and in regard to what may be best for an individual case.

“逐渐减少”的问题，即放弃诸如酗酒和吸食鸦片之类的习惯，就出现在这里，这是一个关于哪些专家在一定范围内存在分歧的问题，以及关于什么可能对个案最好的问题。