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叩く， 敲く， たたく
1. to strike, to hit, to beat, to knock, to pound, to bang, to slap, to spank, to tap, to pat, to clap (one's hands), to play (the drums)
2. to attack, to bash, to criticize, to censure, to flame (on the Internet)
3. to sound out (someone's views)
4....
敲，打
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間違いない， 間違い無い， まちがいない
1. certain, sure, no doubt
2. reliable, dependable
确定，没错