built-in /ˈbɪltˈɪn/ adjective Learner's definition of BUILT-IN
always used before a noun
1
: included as a part of something内置的；内嵌的 -
His new watch has a built-in calculator.他的新手表有一个内置计算器。
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a camera with a built-in flash有内置闪光灯的照相机
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the car's built-in safety features轿车的内置安全性能
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a built-in bookshelf [=a bookshelf that is built as part of a wall]嵌入式书架
2
: forming a natural part of someone or something与生俱来的；固有的 -
All humans have a built-in ability to learn their native language.所有人都天生具有学习母语的能力。
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Living in warmer climates has many built-in [=(more formally) intrinsic, inherent] advantages.生活在比较温暖的气候里有许多固有的好处。
— see also build in/into at 1build