She doesn't know diddly about it.

她根本不知道这事儿。

《牛津词典》

A good vacuuming will get up the sand and other loose debris from your car's carpeting, but it won't do diddly for stains or ground-in dirt.

用真空吸尘器好好打扫的话可以把沙土和其他一些碎屑吸出来，但它对染色和污垢就毫无办法了。

youdao

A good vacuuming will get up the sand and other loose debris from your car's carpeting, but it won't do diddly for stains or ground-in dirt.

用真空吸尘器好好打扫的话可以把沙土和其他一些碎屑吸出来，但它对染色和污垢就毫无办法了。

youdao