We'd better let her alone.

我们最好让她自己呆一会。

youdao

At other times, she would turn petulantly away, and hide her face in her hands, or even push him off angrily; and then he took care to let her alone, for he was certain of doing no good.

在其他时候，她就突然转身，用手掩着脸，或者甚至愤怒地把他推开；然后他就小心翼翼地让她自己待着，因为他确信自己是无能为力的了。

youdao

Her income was barely enough to maintain one child, let alone three.

她的收入养活一个孩子几乎都不够，更不用说三个了。

《牛津词典》

He said he "took responsibility" for what he did, adding: "It was never my intention to cause her any serious harm, let alone cause her death".

BBC: London

D. was not anyone she knew, let alone her mother.

NEWYORKER: I.D.

"We are acutely aware of the fact that this is only the beginning of a long road to prove that, as we know, Oscar never intended to harm Reeva, let alone cause her death, " Arnold Pistorius said in a statement.

CNN: STORY HIGHLIGHTS