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1·The rapid growth results from the fact that the majority of the people fall into the middle of a left-skewed bell-shaped curve.

之所以迅速增长，是因为大多数人都陷入了左弯的钟形曲线的中间。

2·The size structure of canopy gaps and expanded canopy gaps could be fitted by different unimodal functions with a peak skewed to the left.

冠空隙和扩展林隙的大小结构都呈峰值左偏的偏山状分布。