When we try to do something new, we don't know what we're doing. That's the biggest challenge.
?? 名句詞匯解析
從本句名言中提取的重要詞匯，幫助你深度理解這句話
v. 知道;了解;認識;確信;
n. 知情;
?? 知道know的人愛說自己不no知道
"Do you know your ABC?"
你認識所有的字母嗎？
近義：learn, understand, get, cognize, comprehend, meet
n. 挑戰;盤問;質疑;懷疑;
vt. 質疑;向…挑戰;
vi. 提出挑戰，要求競賽（或競爭）;駁斥;
?? 叉那雞（諧音）：用叉子叉那只雞是 挑戰 網友：zhang 補充：chall=call（喊叫）+eng=ing（發生了一次元音字元音變）+e（名詞后綴，只表示這是
"It was a challenge, keeping ten boisterous seven-year-olds amused."
要逗著十個好動的七歲孩子玩真是一種挑戰。
近義：impugn, negate, object, oppose, oppugn, outdare
反義：back, backstop, reinforce, second, support, advocate