更不用提 meaning in Chinese

much less

Half an hour later, there was no sign of even the smallest grass snake, much less a cobra .
过了半个钟头，连最小的草蛇都没看见，更不用提眼镜蛇了。
No ordinary president would have accepted such a state of affairs, least of all one so jealous of his public image as nixon .
因为一般的总统都不会容忍这种状况，更不用提尼克松那样十分计较自己在公众面前形象的总统了。
He won ' t even thank you , let alone pay you
他甚至不会谢你，更不用提付钱给你了。
Not to mention my medal for self - esteem . ohh
更不用提我的自尊奖章
Deal with this issues , okay . we have a deadly petroleum situation , not to mention -
去讨论值得的问题，好么？我们有很严峻的石油问题，更不用提

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