- 1.   
恐吓;威胁  -  
• Nuclear weapons threaten the peace and security of the world. 核武器威胁着世界的和平与安全。 -  
• The robber threatened him with a gun. 那强盗用枪恐吓他。 -  
• They threatened to make the photos public. 他们恐吓说要把那些照片公开。 - 2.   
有…凶兆  -  
• The dark clouds threaten rain. 那些乌云是下雨的征兆。 
- 1.   
恐吓;威胁  -  
• I don't mean to threaten. 我没有威胁的意思。 - 2.   
构成威胁;似将发生  -  
• The buildinges and bridges in the coastal town were unable to avoid severe damage should a typhoon threaten. 若遇有台风,这个海边城镇就不免有许多建筑物和桥梁遭受到严重损坏。