The Middle East situation is now at a critical moment and its future evolution will have a great impact on peace and stability in the world.
中东局势正处在关键时刻，下一步走向攸关世界和平与稳定。
In order to discuss the stability of these solutions, a perturbation must be add to these solutions, and the evolution of the perturbation should be analysed.
为了讨论这些解的稳定性，必须在这些解的基础上叠加一个小扰动，并分析小扰动的演化。
These advances include the researches on the submarine slope stability in qualitative and quantitative way, and the subsequent evolution of submarine landslides following initial sediment failure.
这些进展主要包括海底斜坡土体不稳定性的定性和定量研究、海底斜坡土体失稳后演变趋势的定性和定量研究。
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