Don't sneer AT others' failure.

不可嘲笑别人的失败。

Sneer at in seven Yan hearts, hum!

七焰心中冷笑，哼！

You might sneer at this, but I know now.

你可能会对此嗤之以鼻，可是我现在明白了这一点。

Pedants sneer at an education which is useful.

迂腐之士讥笑学以致用的教育。

Pedants sneer at an education, which is useful.

学究们藐视教育，但教育却是有益的。