One key opens one lock. / There is a different solution for each problem. (idiom)

One key opens one lock. / There is a different solution for each problem. (idiom)

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

to hold; to grasp / to hold a baby in position to help it urinate or defecate / handlebar / classifier: handful, bundle, bunch / classifier for things with handles / (used to put the object before the verb: 把 + {noun} + {verb})

handle

key / also pr. [yao4]

key / CL: 把

spoon

used in 鑰匙｜钥匙

to open (transitive or intransitive) / (of ships, vehicles, troops etc) to start / to turn on; to put in operation; to operate; to run / to boil / to write out (a prescription, check, invoice etc) / (directional complement) away; off / carat (gold) / abbr. for Kelvin, 開爾文｜开尔文 / abbr. for 開本｜开本, book format

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

to hold; to grasp / to hold a baby in position to help it urinate or defecate / handlebar / classifier: handful, bundle, bunch / classifier for things with handles / (used to put the object before the verb: 把 + {noun} + {verb})

handle

to lock; to lock up / a lock (CL:把)

old variant of 鎖｜锁