要治疗这些不存在的肢体上的疼痛就更难上加难。
Treating pain in a limb that does not exist is harder still.
巴西民调人员因为忽略了询问受访者是否确定会投票，而可能使民调的准确性更难上加难。
Brazilian pollsters may be making it even harder than necessary by neglecting to ask respondents whether they actually intend to vote.
随着年龄的增长，旅行变得越来越不容易，当你拥有一个家庭之后你不能只考虑自己，你需要为家里至少三口人谋生计，这个时候旅行就更难上加难了。
Traveling becomes infinitely harder the older you get, especially if you have a family and need to pay the way for three-plus people instead of just yourself.
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