如何检查，如果无效指针指向空？
如果无效，则向客户端返回空的Ajax响应。
这就是平民疗法的精神：它们可能有效也可能无效，（如果无效）那你又能有什么损失呢？
That’s the spirit of folk remedies: They may or may not work, but what have you got to lose?
这就是平民疗法的精神：它们可能有效也可能无效，(如果无效)那你又能有什么损失呢？
That's the spirit of folk remedies: They may or may not work, but what have you got to lose?
以下是我如何安装核心的步骤，当然必须要看你的版本是否兼容。如果无效的话，请参考上面的网址。
The following is how I install the kernel, though this requires a compatible build. If this does not work, consult the URL above.
如果两名或两名以上的裁判没有认可，那么试举的结果无效。
If two or more referees disapproves the lift, then the result of the attempt is in valid.
如果两名或两名以上的裁判没有认可，那么试举的结果无效。
If two or more referees disapproves the lift, then the result of the attempt is in valid.
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