There are sediments at the bottom of this lake that have accumulated over centuries.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

Well then, I'm off.

His art style is unique, it's neither fish nor fowl.

It is reported that North Korea has conducted another underground nuclear test.

He is an expert in experimental psychology.

He is spending a lot of time on experimental research.

We should always remember the power of Kannon in difficult times.

He always buys cheap things, so in the end, it becomes 'penny wise and pound foolish'.

Acidic oxides react with water to produce acids.