Use this function to clear variables of type VARIANTARG (or VARIANT) before the memory that contains the VARIANTARG is freed (as when a local variable goes out of scope).

使用这个函数去清除VARIANTARG(或VARIANT)类型的变量在内存包含的VARIANTARG被释放(当一个局部变量超出作用域时)。

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This method can be strong teeth, stretch the head muscles, facilitating blood circulation in the head, which can be clear-headed brain and improving memory function.

此方法可以坚固牙齿，拉动头部肌肉，促进头部血液循环，进而起到清醒大脑、增强记忆力的功效。

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