今日短语
短语 money doesn't grow on trees 的字面意思是"钱不会长在树上"，实际想表达的意思是不要乱花钱，因为挣钱不容易。
Meaning:You use this proverb to tell someone that he/she shouldn't waste money or there is not enough money to buy something expensive.
If someone says, "Money doesn't grow on trees," he/she means that it is not easy to earn money, so it is valuable, and you have only a limited amount of money. You should be careful how much money you spend.
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例句
My daughter Claire wants a car for her 17th birthday, but I can't afford it. Money doesn't grow on trees!

"Mum, can you give me some more pocket money?"
"No I can't – money doesn't grow on trees, you know."

A: "Mom, can I buy a new dress?"
B: "We can't afford one now. Money doesn't grow on trees."

Our lab computers are getting old, but we can't afford to buy new ones this semester. Money doesn't grow on trees, you know.

知识拓展：
请注意
短语 money is no object 的意思是说你有很多钱，所以钱不是问题。
He lives in a mansion, has three sports cars and goes on holiday every month. Money is no object for him.

http://www.24en.com/d/file/bbc/today-phrase/2013-05-22/2aab7a569f45bb775b59ddbf10b9cdf2.jpgMoney doesn't grow on trees 挣钱不容易" />
Buddhists attach Thai baht banknotes on an artificial tree with golden leaves during a ceremony in Bangkok. Photo: Reuters/Damir Sagolj.

今日小常识
You can often see Buddhist 'money trees' in Thailand. The tree above was part of a ceremony to mark Vesak Day, the annual celebration of Buddah's birth, enlightenment and death.
在泰国经常会看到"钱树 money trees"。卫塞节(Vesak Day) 是纪念佛陀出生、成道觉悟和逝世的一个节日。钱树每年都会作为庆祝活动的一部分现身于此节日。