.has both advantages and disadvantages既有利又有弊。例如：1Obviously television has both advantages and disadvantages2Living in a city has both advantages and disadvantages3Com pared with cars，bikes have their advantages and disadvantages 举一反三：1Although computers bring people a lot of convenience，they have many disadvantages2has many advantagesFor example，However，just as every coin has two sides，has its disadvantages（本例将利弊分开讲，转折过渡自
