not less than a certain amount or number
You need to drink at least eight glasses of water every day.
毎日少なくとも8杯の水を飲む必要があります。
used to indicate that something is the minimum that should be done
At least try to finish your homework before going out.
出かける前に少なくとも宿題を終わらせようとしなさい。
used to highlight a positive aspect in a generally negative situation
The hotel was far from the beach, but at least the rooms were clean.
ホテルはビーチから遠かったが、少なくとも部屋は清潔だった。
used to soften a statement or make it less definite
I think I've solved the problem, at least, that's what I hope.
私は問題を解決したと思います、少なくとも、それが私の望みです。