lend 是借出的意思，但是 lend an ear 不要理解为“借耳朵”，真实含义是(认真而同情地)倾听。

【例句】
They are always willing to lend an ear and offer what advice they can.
他们总是愿意认真倾听并尽量提出建议。

Thank you for lending an ear, I feel much better now that I've got that off my chest.
谢谢你的倾听，说出来后我感觉好多了。