沈认为，应该是时候使用人类干细胞研究相同的事情了。
Sheng thought it was time to study the same things using human embryonic stem cells.
无论如何，人类干细胞研究应该按照一定规范谨慎进行。
Anyway stem cell research should be conducted under the standard management.
但是，他几个月来一直忙于打报告申请拨款，好做更多的使用人类胚胎干细胞研究工作，他害怕遭到拒绝。
But he has been working for months on writing a grant that he was about to submit for more work using human embryonic stem cells, and he feared it would be rejected.
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