They also offer a look into the oft-times superficial aspect of job-hunting in China, where help-wanted ads often specify that candidates be of a certain age or height.

它也让人们看到了在中国求职时常常遭遇的肤浅的一面：招聘广告中常常对求职者的年龄或身高做出限制。

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Here, you specify the (x, y) starting point of the rectangle and its height and width.

这里，您指定这个矩形的起点(x, y)以及它的高度和宽度。

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Because it's a square image, you can specify the same width and height (the calculated $imageScale).

因为它是一个正方形的图像，所以您可以指定相同的宽度和高度（已计算的 $imageScale）。

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