问题描述：
这么英语句子里的should是什么用法呢?
Meanwhile the US is preparing financial sanctions against both officials and
protest leaders should the violence worsen,according to US congressional aides.
如题,should the violence worsen是表假设的吧,语法是怎么样的
Meanwhile the US is preparing financial sanctions against both officials and
protest leaders should the violence worsen,according to US congressional aides.
如题,should the violence worsen是表假设的吧,语法是怎么样的
问题解答：
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