The government declared a state of emergency to prevent the spread of the new coronavirus.

He always proactively suggests new ideas.

We have a responsibility to protect the biodiversity of the Earth.

Thanks to his thorough investigation, a new discovery was made.

His business is smooth sailing.

His talk was unintelligible, I couldn't understand what he was saying at all.

His talk is like an unintelligible speech.

He is truly an eccentric person.

He is acting like a fool.

In Vietnamese, there are many Sino-Vietnamese words borrowed from Chinese.