could do with

Verb

To need something that would be beneficial.

Japanese Meaning

必要としている、欲している（何かがあれば役立つという意味合い）

After a long day of meetings, I could do with a strong cup of coffee.

長い会議の一日の後で、濃いコーヒーが一杯あれば本当に助かる。

Sense（1）

To need something that would be beneficial.

I could do with a torch, if you've got one.

could have done with

（ participle past ）