The key periods are seedling and fruit-formation period.

关键期是胡麻苗期和蒴果形成阶段。

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The high school, which is in the formation period of a worldview, is a momentous period of life, and is also in need of love and care of the family.

而高中阶段正处在世界观形成时期，是人生的关键时期，也正需要家庭的关爱和呵护。

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At present Beijing CBD is in the transition from planning period to construction management period and from industrial planning period to industrial formation period.

目前，北京CBD正从规划建设阶段逐渐向建设管理阶段、由产业规划阶段向形成产业阶段过渡。

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Researchers in the United States say drinking a lot of alcohol over a short period may influence genes involved in bone formation.

VOA: special.2010.08.31

Such a formation often means that a period of stagnant or downward trading is ahead, and the pattern now fits all three major indices.

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As shown in the first chart below, there are only a couple of times when housing contributes 1-2 percentage points to growth, the most notable being the post-war period of rapid household formation by returning war veterans.

FORBES: Connect

"The unusually hot and dry conditions coincide with the period of pollination and kernel formation, which sharply reduces estimated yields, " the USDA reported.

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