单词	clack
释义	clackclack /klæk/ verb Word Origin WORD ORIGINclack Origin: 1200-1300 From the sound Verb Table VERB TABLE clack Simple Form Present I, you, we, they clack he, she, it clacks Past I, you, he, she, it, we, they clacked Present perfect I, you, we, they have clacked he, she, it has clacked Past perfect I, you, he, she, it, we, they had clacked Future I, you, he, she, it, we, they will clack Future perfect I, you, he, she, it, we, they will have clacked Continuous Form Present I am clacking he, she, it is clacking you, we, they are clacking Past I, he, she, it was clacking you, we, they were clacking Present perfect I, you, we, they have been clacking he, she, it has been clacking Past perfect I, you, he, she, it, we, they had been clacking Future I, you, he, she, it, we, they will be clacking Future perfect I, you, he, she, it, we, they will have been clacking Examples EXAMPLES FROM OTHER DICTIONARIES The keys clacked as she typed. [intransitive] to make a continuous short hard sound:  the sound of high heels clacking across the courtyard—clack noun [singular]:  the clack of typewriters
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