built-in
US /ˌbɪltˈɪn/
UK /ˌbɪltˈɪn/

1.
內置的, 固有的
included as part of something and not separate from it
:
•
The new car has a built-in navigation system.
新車配有內置導航系統。
•
The apartment comes with built-in wardrobes.
公寓配有內置衣櫃。
2.
固有的, 內在的
existing as a natural or essential part of something
:
•
There's a built-in risk in any investment.
任何投資都有內在風險。
•
The system has built-in safeguards against errors.
該系統具有內置的錯誤防護措施。