His insight greatly contributed to the success of the business.

There are a lot of sedges growing in this pond.

The mosquito net hanging grass is one of the summer features.

Lesser rice flat sedge is growing in this wetland.

He had been holding a grudge against me for a long time.

He deeply resents me.

卜 is a common Chinese surname.

Using an old-fashioned word, he said, 'mairasesourou.'

He is an expert in astrophysics.

He couldn't hide his remorse for the failure.