The assertion expression evaluates to true if the value of height is less than the value of width, otherwise it evaluates to false.

如果 height 的值小于 width 的值，那么断言表达式的计算结果为 true，否则为 false。

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The craftsman knife like a pen, with the decoration groove of the thickness, width and depth change, the pattern was true to life.

工匠运刀似笔，纹饰随着刻纹的粗细、宽窄、深浅变化，把图案表现得栩栩如生。

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