临字
LinZi
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Stories
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Demo
Stories
Pills
Dictionary
Annotator
For Schools
简
繁
Download App
Dictionary
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备而不用
备而不用
備而不用
bèi
ér
bù
yòng
ㄅㄟˋ ㄦˊ ㄅㄨˋ ㄩㄥˋ
Idiom
⇄ compare
1
have sth ready just in case
2
keep sth for possible future use
Characters
备
而
不
用