年末，罗斯结束了她多年前就开始的大学生涯，取得了学位。毕业一周之后，罗斯在睡梦中平静地去世。
At the year's end Rose finished the college degree she had begun all those years a go. One week after graduation Rose died peacefully in her sleep.
毕业一周之后，罗斯在睡梦中平静地去世。
One week after graduation Rose died peacefully in her sleep.
研究人员称，早产时间大于两周的孕妇，头发中平均汞含量是其他妇女的两倍。
The women who gave birth more than two weeks early were three times as likely to have double the average mercury level in their hair samples, the researchers said.
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