Now the astronauts have arrived home, they will soon be taken to the Johnson Space Centre in Houston, Texas, where they will be checked over by medical experts.
and the "no work email please": ^(?!info@|help@|sales@). These would not match because negative look-aheads are unsupported in Ostrich since they are complicated to implement for a constraint solver. They can be rewritten in some cases, but nobody's bothered because that's one of the many, many things that "aren't research".，详情可参考搜狗输入法下载
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要回答这个问题，还是可以从“招商伊敦”号过去四年的运营来试着分析。