something doesn't grow on trees 不是从天上掉下来的(传统表达法)
英文释义
Traditional expression referring to something (usually money) that is not easy to acquire, but that requires hard work, and so deserves respect.
When I was young, I was lazy, but then I realized that money doesn't grow on trees, and if I wanted to be rich I needed to work hard.
我年轻时很懒,但后来我知道,钱不是从天上掉下来的。要想发财,就得努力工作。