1. be made of : 由...所组成；
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1.
2. （由…）构成的；（由…）制成的
If something is made of or made out of a particular substance, that substance was used to build it.
3. 有成功的把握;具备所需的一切条件
If you say that someone has it made or has got it made, you mean that they are certain to be rich or successful.