Sometimes in this context, you'll hear these called operators instead of transformations, but the meaning is the same.

有时在这种情况下 您会听到这些被称为操作符而不是转换 但含义是相同的。

The operator calls your number, and then the operator reads what your friend is typing, and types back what you say to him or her.

接线员会拨打您的号码， 然后接线员会读取您朋友正在输入的内容，然后将您对他或她说的话回复给他或她。