大多数情况下，当人们对一些棘手话题提出开放式问题的时候，他们并不意图得到答案，而更多地是在寻求一个权威，一张保护网来作为犯错时的退路。
Most of the time, when people ask broad questions about difficult issues, they're not so much looking for answers as for authority, for a safety net to fall back on.
钢制箱梁的开放式底部应用活动金属网进行保护。
Open bottoms of steel box beams shall be protected by removable expanded metal mesh.
您可能需要开关盒的保护，或开放式解决方案的简单便捷。
You either require the protection that the switchbox gives, or the simplicity and convenience of an open solution.
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