.... A lot of grownups think playing PC games hinders the students from learning. But I think PC...
...操作 demonstration [n.] 示範說明 20. inflate [v.] 充氣;使膨脹 inflation [n.] 通貨膨脹 21. hinder [v.] 阻礙;妨礙 hindrance [n.] 妨礙;障礙物 22. oxygen [n.] 氧氣 23. concerning...