Through the analysis, it is shown that the Matsa s extratropical transition and the re-intensification are due to the intrusion of cold air from the upper-level trough into the typhoons circulation.

以一个在陆上长久维持并最终演变成温带气旋的登陆台风“麦莎”为研究对象，通过对其北上变性过程的分析发现，台风与中高纬西风槽的相互作用使得冷空气侵入是其变性加强的原因。

youdao

Going into another crisis of this scale, absolute capital levels would need to be at least double the existing minimum level to avoid breaching that floor at the trough of the cycle.

在即将陷入这样大规模的金融危机时，绝对资本需要比现有最低水平标准的至少两倍，才能避免违背最低标准，度过危机。

youdao

That still left the typical household's income below its level at the trough of the last recession, despite four years of strong output growth.

尽管经过了四年强劲的经济增长，典型美国家庭的收入仍然低于上次经济衰退时的平均水平。

youdao

That still left the typical household's income below its level at the trough of the last recession, despite four years of strong output growth.

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That said, we believe that the revenue level in the second quarter of 2012 represents a trough period for us.

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The unemployment rate has dropped more than 40% of the way back to its pre-recession level, but the employment-to-population ratio is closer to its trough than its pre-recession peak.

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