You can describe someone or something as self-contained when they are complete and separate and do not need help or resources from outside.
例句
He seems completely self-contained and he doesn't miss you when you're not there...他似乎十分独立，你不在的时候也并不想念你。...self-contained economic blocs.独立自足的经济集团
ADJ-GRADED
(住宿场所)设施齐全的，独门独户的
Self-contained accommodation such as a flat has all its own facilities, so that a person living there does not have to share rooms such as a kitchen or bathroom with other people.
英汉词典释义
adj.
沉默寡言的;独立性的
a self-contained person持重的人
一切都完备的；配套齐全的；独门独户的
a self-contained flat有独立设施的公寓The flat is completely self-contained.这是一套设备非常齐全的公寓。
自给自足的
a largely self-contained community基本上自给自足的社会
英英词典释义
Adjective
1. constituting a complete and independent unit in and of itself;
"the university is like a self-contained city with shops and all amenities"
2. in full control of your faculties;
"the witness remained collected throughout the cross-examination""perfectly poised and sure of himself""more self-contained and more dependable than many of the early frontiersmen""strong and self-possessed in the face of trouble"