The moon is receding at a certain rate per year.

月球正在逐年退后。

However, this process can only happen at a certain rate, so glucose needs to be put somewhere else.

不过，细胞处理过程不会很快，所以血糖还需要一些空间去存放其他。

But a body with a particular temperature must emit radiation at a certain rate.

但是具有特定温度的物体必须以特定速率发射辐射。

If you make a constant noise inside the chamber maybe by steadily beating a drama at a certain rate.

如果你在室内发出持续的声音，也许可以通过以一定的速度稳定地跳动戏剧。

Studies like this are based on the idea of the molecular clock, which hypothesizes that mutations build up at a certain rate.

像这样的研究是基于分子钟的想法，它假设突变以一定的速度累积。

Now normally, the difference in the electrolyte concentration inside and outside the cell wouldn't pose a problem, because your kidneys flush out any excess water; however, the kidneys can only excrete fluid at a certain rate.

正常情况下，细胞内外电解质浓度的差异不会造成问题，因为肾脏会排出体内多余的水分；然而，肾脏只能以一定的速度排出液体。

You can only make energy from glucose at a certain rate, and your glycogen tank was filled up a long time ago, so the glucose needs to be turned into fat for storage, but your fat cells are already filled up.

人体只能以有限的速率从葡萄糖中汲取能量，当体内糖原仓库早就爆满，那些葡萄糖就只能转化为脂肪放在脂肪细胞中，但脂肪细胞也装不下了。

But though, in disputes with their workmen, masters must generally have the advantage, there is, however, a certain rate, below which it seems impossible to reduce, for any considerable time, the ordinary wages even of the lowest species of labour.

但是，虽然在与工人的争执中，一般来说，厂主必须占优势，但是，有一个特定的比率，即使在相当长的一段时间内，似乎也不可能将最低工资种类的普通工资降低到这个比率以下。