Conversely, if your pH starts to become too high or alkaline, the body uses similar tools in reverse to bring down the pH.

相反，如果你的pH值开始变得太高或太碱，你的身体会用类似的器官来反转降低PH值。

youdao

But the drugs cannot reverse brain damage that has already occurred, and they carry risks of their own because they also strip useful metals from the body, such as iron and zinc.

而这种药物无法弥补已产生的大脑损伤，且药物本身存在风险，因为它们也会将有用的金属元素，如铁与锌一并剥离排出体外。

youdao

That's why they come out of our museums feeling like they've run a marathon in reverse: because they're walking more slowly than the human body was designed to.

这就是为什么观光客们从我们的博物馆里出来都像是倒退着跑完了马拉松全程一样精疲力尽：因为他们步行的速度比人类应该步行的速度慢得多得多。

youdao

Mr Devenney has written to First Minister Alex Salmond asking for answers to the points he has been raising and asking also whether the SNP intends to reverse the recent merger of the long-established professional body for Scottish actuaries.

BBC: sterling