earnest

US /ˈɜ:rnɪst/

UK /ˈɜ:nɪst/

B2 中高級英檢中級多益
adj.形容詞認真的;真誠的
She is the most earnest young woman that I've ever met
n. (c./u.)名詞 (可數/不可數)定金
He put down an earnest on the house to show his serious intent to buy.

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原子的历史 (The History of Atomic Chemistry: Crash Course Chemistry #37)

09:42原子的历史 (The History of Atomic Chemistry: Crash Course Chemistry #37)