1·It has left an unprecedented degree of unemployed workers and underused factories in its wake.
使随后的失业的工人和未充分利用的工厂达到前所未有的程度。
2·The Pan American games held in Rio in 2007 reportedly cost ten times the official budget, and left behind underused arenas.
根据报导，2007年里约主办泛美运动会花费了官方预算的十倍，并留下未充分利用的体育场馆。
3·This is a highly underused facility, but probably for good reason: how can a particular module tell whether the syntax is wrong because it's wrong, or because it's correct but for a different module?
这是一个高度未充分利用的设施，但可能有很好原因：一个特定的模块是怎么判断语法是错误的，因为它是错误的，或者因为这是正确的，但对于不同的模块?。