a person who is skilled in three different areas, especially a performer who can act, dance, and sing well

He's a triple threat as singer, dancer and actor. 他是歌手、舞者和演员的三面手。

The athlete is a triple threat: He can run. He can throw. He can jump. 这位运动员是一个三面手：他能跑、能投掷、能跳。

something that has three dangerous or unpleasant features or parts

The triple threat of declining housing values, tighter credit terms and rising energy prices has hit the average consumer hardest. 房价下跌、信贷条件收紧和能源价格上涨的三重威胁对普通消费者的打击最为严重。