A quadword is identified by the address of the word containing the low-order bit(bit0).
A quadword is identified by the address of the word containing the low-order bit(bit0).
四倍字长地址由含最低位（0位）字的地址来标识。
A quadword is identified by the address of the word containing the low-order bit(bit0).
四倍字长地址由含最低位（0位）字的地址来标识。