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一把钥匙开一把锁
一把鑰匙開一把鎖
yībǎyàoshikāiyībǎsuǒ
1. One key opens one lock.
2. There is a different solution for each problem. (idiom)

Character Breakdown

一
yī
one; a, an; alone
HSK 1 1 丶
把
bǎ
to grasp, to hold; to guard, to take; handle
HSK 3 7 丶
钥
yào
lock, key
HSK 4 9 丶
匙
chí
spoon; surname
HSK 4 11 丶
开
kāi
to open; to start, to initiate, to begin
HSK 1 4 丶
一
yī
one; a, an; alone
HSK 1 1 丶
把
bǎ
to grasp, to hold; to guard, to take; handle
HSK 3 7 丶
锁
suǒ
lock, padlock; chains, shackles
HSK 5 12 丶

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