高考后和后妈坐火车去北京

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ELEMENT:
Tennessine
SYMBOL:
Ts
ATOMIC NUMBER:
117

   
 
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高考后和后妈坐火车去北京
高考后和后妈坐火车去北京 
高考后和后妈坐火车去北京
 
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高考后和后妈坐火车去北京
 
PTOV is created by video journalist Brady Haran working with chemists at The University of Nottingham