单词	action time
释义	action time noun : the time during which a stimulus must act to produce maximum effect compare presentation time Word History First Known Use 1897, in the meaning defined above
随便看	ulnaria ulnarrer ulnarrest ulnars ulnas ulno- ulnocondylar ulo uloborid Uloboridae Uloborus Ulothrix Ulotrichaceae ulotrichaceous Ulotrichales ulotrichan ulotrichoid ulotrichous ulotrichy ulpan ulpanim ulpans Ulpian Ulsan ulster

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