但这并不是这则声明备受争议的原因。
胚胎干细胞的研究备受争议，原因是获得能够发育成为几乎人体所有组织的细胞，有损于人类胚胎。
Embryonic stem cell research is controversial because human embryos are destroyed in order to obtain the cells capable of developing into almost every tissue of the body.
BP的报告总结认为，最备受争议的油井设计，也就是采油套管设计是合理的，不是导致失败的原因。
The BP report concludes that the most criticised well-design choice, known as a long string, was a reasonable one and did not lead to the failure.
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