OK什么意思、怎么读？单词用法、记忆法、发音音标、反义词同义词辨析、释义

O.K. Let's call it a day.

好吧。今天到此为止。

※A straight foot is not afraid of a crooked shoe. 身正不怕影子斜。
※A book is the same today as it always was and it will never change. 一本好书今天如此，将来也如此，永不改变。
※A book that remains shut is but a block. 有书闭卷不阅读，无异是一块木头。
※A cat may look at a king. 猫也有权晋见国王。
※A good book is a best friend who never turns his back upon us. 一本好书，莫逆之交。
※A good book is a light to the soul. 好书一本，照亮心灵。
※A valiant man's look is more than a coward's sword. 勇士的神色胜过懦夫的刀剑。
※A wicked book is the wickeder because it cannot repent. 一本坏书危害无穷。
※Judge not a book by its covers. 评价书不能看封面。
※Beware of a man of one book. 不要与一个有专业知识的人争论。