他把我的论证轻蔑地一笔抹杀，认为不值一驳。

He dismissed my argument contemptuously as not worth refuting.

你批评他当然是可以的，可是你却粗暴地把他一笔抹杀了。

You could of course have criticized him, but instead, you cried him down rudely.

多数专家、学者认为清代雕塑颓败不堪，不值一提，对清代雕塑采取一笔抹杀的态度。

The most experts, the scholar thought Qing Dynasty sculpture decadent is unable to withstand, is not worth raising, has the manner to the Qing Dynasty sculpture which totally negated.