He went to school by crossing the bridge.

This audio is very clear.

The sound was so quiet that I could hardly hear it.

He is interested in the ancient Chinese musical instrument, bianzhong.

Oh, that's right, I remembered what I ate for dinner yesterday.

It's not so much a big problem.

He eats meals like sake lees and rice bran every day.

He left the room in a panic.

He is devising a plan for a new business.

He is conceiving a new business plan.