bất li thân
Meaning
2 senses
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Something that is extremely important or necessary and is kept close to oneself at all times.
vi Điện thoại là vật bất li thân của tôi.
en The phone is an essential item that I keep with me at all times.
A state of being so closely linked or joined that it is impossible to separate them.
vi Họ là đôi bạn bất li thân.
en They are inseparable friends.