built-in
🇺🇸
/ˌbɪlt ˈɪn/
🇬🇧
/ˌbɪlt ˈɪn/
part of something and cannot be removed
This smartphone has a built-in GPS for easy navigation.
这款智能手机内置了GPS,便于导航。
a natural or permanent feature of something
The built-in security system keeps the house safe.
内置的安全系统保护了房屋的安全。