Whenever you mention the word " Mommy, " they turn into sniveling ingrates.

你们只要提起“妈妈”这个词，他们就变群哀嚎中的忘恩负义之人。

You're an ingrate. - No, wait, okay.

你真是忘恩负义。 -等等。

That ingrate can't stop hounding me for five minutes.

这忘恩负义的家伙 5分钟也不让我闲着。

Ingrating the brush's bristles over the enamel can wear minuscule grooves in the tooth, which add up to significant erosion over time.

将刷毛在牙釉质上摩擦会导致牙出现微小的沟槽，久而久之会积累显着的磨损。

To take another example, while Goncharov presents those Africans who persist in rejecting European civilization as hardheaded ingrates, he is far from considering those who do accept it wise and prudent.

再举个例子，虽然冈察洛夫将那些坚持拒绝欧洲文明的非洲人描述为顽固的忘恩负义者，但他远非认为那些接受欧洲文明的人是明智和谨慎的。