Wilmut said there were so many failures because it was difficult to ensure that the empty oocyst and the donor cell were at the same stage of the cell division cycle.

威尔·马特说之所以有这么多的试验失败，是因为很难保证空卵囊和供体细胞能处在细胞分裂周期的同一阶段。

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The division of the ecosystem of this pair of plateaus is favorable to the study on plateau ecosystem benign cycle.

这对高原生态系统的划分有利于对高原生态系统良性循环的研究。

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This article gives a detail discussion on the assembled code optimization from instruction arrangement, register division, condition selection branch and cycle structure based on the core of ARM9TDMI.

本文基于ARM 9tdmi内核，从指令调整、寄存器分配、条件分支和循环结构等方面对汇编代码的优化方法进行了详细的论述。

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And while it's natural to see discord between the different elements after the kind of revolution Egypt has experienced, Elgindy said, he sees danger in the growing cycle of division.

CNN: Row over Egypt's new constitution reflects wider tensions

Until the cycle picks up again, this division, and so Philips as a whole, is likely to struggle.

ECONOMIST: Philips��s new frontiersman