ascertain

US /ˌæsɚˈten/

UK /ˌæsə'teɪn/

B2 中高級英檢高級多益
v.t.及物動詞確定 ; 查明;探知
To ascertain the cause of his change in behavior, we must test him

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澳洲也有情報局?!但完全就是個笑話! (Hostage Rescue Training Fails Spectacularly | Tales From the Bottle)

06:21澳洲也有情報局?!但完全就是個笑話! (Hostage Rescue Training Fails Spectacularly | Tales From the Bottle)