关于非法移民的争论的核心是一个关键问题：移民对经济是好还是坏？
At the heart of the debate over illegal immigration lies one key question: are immigrants good or bad for the economy?
感受到情绪并不是一件坏的事情，如何去处理和表达她们才是关键。
Feeling emotions is not a bad thing how we deal with and express them are key.
结果表明，沙滩排球与室内排球扣球技术动作间的差异，主要体现在助跑与起跳两个关键的技术坏节上。
The results show that the difference of spike techniques performed by the players both in beach and indoor volleyball exists in the approach run and taking-off.
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