as old as the hills
US /æz oʊld æz ðə hɪlz/
UK /æz oʊld æz ðə hɪlz/

1.
老掉牙了, 非常古老
very old; ancient
:
•
This joke is as old as the hills, but it still makes me laugh.
這個笑話老掉牙了,但它仍然讓我發笑。
•
My grandmother's stories are as old as the hills, but I love listening to them.
我奶奶的故事老掉牙了,但我喜歡聽。