How to escape double dash in markdown?

如何逃脱降价的双重冲击？

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Otherwise some sort of whitelist or markdown would work.

否则，某些类型的白名单或降价会工作。

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No markdown should be taken in the period of 30's promotion.

新商品在30天推广期内店内不得进行降价促销。

youdao

No markdown should be taken in the period of 30's promotion.

新商品在30天推广期内店内不得进行降价促销。

youdao