想问一下下面这些运算符分别代表什么呢？？虽然在MSDN里都能查到，但由于是英文所以看不明，谢谢了`
<<=
Shift the value of the first operand left the number of bits specified by the value of the second operand; store the result in the object specified by the first operand.

>>=
Shift the value of the first operand right the number of bits specified by the value of the second operand; store the result in the object specified by the first operand.

&=
Obtain the bitwise AND of the first and second operands; store the result in the object specified by the first operand.

^=
Obtain the bitwise exclusive OR of the first and second operands; store the result in the object specified by the first operand.

|=

Obtain the bitwise inclusive OR of the first and second operands; store the result in the object specified by the first operand.