底

底

"底" means "bottom" or "base."

Here, '底' refers to the bottom or the lowest part of the lake.

湖の底はとても深い。

The bottom of the lake is very deep.

In this context, '底' metaphorically represents the fundamental or underlying reason of the issue.

その問題の底にある理由を探しました。

I searched for the reason at the root of the problem.

Here, '底' refers to the sole (bottom part) of the shoe.

この靴の底が剥がれてしまった。

The sole of these shoes has come off.