Everyone in the world should care about the planet. 地球上的每个人都应该关心这颗星球。
ADJ-GRADED. 轻率的;不计后果的;鲁莽的;无所顾忌的. If you say that someone is reckless, you mean that they act in a way which shows that they do not care about danger or the effect their behaviour will have on other people.
