On the second day, when he went up the mountain to chop firewood and at the side of a tree he found his lost axe.
第二天，他上山砍柴时在一棵树边上发现了丢失的斧子。
With increase of the series compensation level, the sub-synchronous resonance may occur at the left side neighborhood of the imaginary axe.
随着串联补偿度的升高，次同步谐振可能出现于虚轴左侧邻域。
From this stump we may guess the sharpness of his axe, and from the slope of the stroke, on which side he stood, and whether he cut down the tree without going round it or changing hands;
这是一堆木垛，我们可以想象他的斧头有多锋利，我们研究他劈柴的角度，可以估计他伐木时站在哪一边；还有，当他把树木砍下来时，身体有没有围着树转，斧头是否换过手。
From this stump we may guess the sharpness of his axe, and from the slope of the stroke, on which side he stood, and whether he cut down the tree without going round it or changing hands;
这是一堆木垛，我们可以想象他的斧头有多锋利，我们研究他劈柴的角度，可以估计他伐木时站在哪一边；还有，当他把树木砍下来时，身体有没有围着树转，斧头是否换过手。
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