Probalility density
[電] 機率密度
?? 詞語組成解析
??? 情景例句
He's a pretty good bloke and he seems very friendly.
他是一個很不錯的家伙，看起來也很友善。
When he moved to France, the children adapted very well.
他移居法國后，孩子們很適應那里的生活。
Suddenly, they heard a voice behind them.
突然他們聽到身后有聲音。