1. A federal official, speaking anonymously, links the guidance to the Provincetown, Massachusetts outbreak.
link...to 把...和...连接
She claims no link to the anonymous letters.
她声称与匿名信无关
。
2. And the National Weather Service says two tornadoes touched down in eastern Pennsylvania on Thursday evening.
touch down 降落;着陆;持球触地
The plane should touch down at two o'clock.
这架飞机应在两点钟降落
。
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