"决定"这个词在英语中可以表达为"decide"或者"make a decision"。例如，"I have decided to go to college"意为"我已经决定去上大学了"，"We need to make a decision about which car to buy"意为"我们需要决定买哪辆车"。另外，"decision"是"决定"的名词形式，例如："I've made a decision"意为"我已经做出决定了"。