Optimality
[计] 最佳性
🗣️ 情景例句
Her illness kept her in bed for a week.
她因生病而在床上躺了一星期。
Don't make any mistakes.
别出差错。
Look, Gary!That policeman's waving to you.He wants you to stop.
瞧，加里！那个警察正朝你挥手呢。他要你停下来。