Well, for starters, "Hello World" is a regular 8-bit-per-character string and assigning it to an array of 32-bits per character is invalid.

对于初学者来说，“ Hello World ”是每个字符8位的常规字符串，把它赋值给每个字符32位的数组是非法的。

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America's economy isn't a stalled car, nor is it an invalid who will soon return to health if he gets a bit more rest.

美国经济不是一辆抛锚的汽车，也不是一个多休息会就可以恢复健康的病人。

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Geometrical optics approach can only calculate the high frequency approach solution of drilling bit vibration source wave equation in non caustic area but it become invalid in caustic area.

由于几何光学法求解钻头震源波动方程的高频近似解有局限性，即在焦散区失效，故只能计算非焦散区的高频近似解。

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