如何阻止这种情况的发生，同时保持它们对人体的有益作用应该是接下来的几年中人们优先研究的主要问题。
Learning how to stop the latter whilst preserving the useful functions of reactive oxygen species should be a major research priority in the next few years.
在后缀表达式中，不需要括号，而且操作符的优先级也不再起作用了。
In postfix notation, the need for parentheses is eliminated and the priority of the operators is no longer relevant. You can use the following algorithm to evaluate postfix expressions.
这种拒绝策略的一个关键的副作用就是它可以拒绝那些与最高优先级服务策略相关的请求。
A critical side effect of this rejection policy is that it can also start rejecting requests associated with the highest priority service policies.
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