This is a very serious matter.

这是一个非常严肃的问题。

youdao

This is a very serious threat to us.

这对我们是一个严重威胁。

youdao

I thank that this is a very serious matter.

我想这是一个很严重的问题。

youdao

"This is a very serious winter storm, and we want Oklahomans to stay safe, " he said.

CNN: STORY HIGHLIGHTS

This is a very serious matter and suggests the situation will only deteriorate in the coming months.

FORBES: Comex Gold Slightly Lower as Markets Try to Stabilize

This is a very serious and important (Unintelligible) issue that concerns all Americans.

NPR: Debate on Iraq Timetable Moves to Senate