dangerous

• It is dangerous to cling to outdated ideas and theories .
  坚持过时的观点和理论是很危险的。
• Frightened men could be dangerous when cornered .
  受惊的人们走投无路时，就能成为危险的人。
• It is dangerous to judge on the basis of first impressions .
  凭借初次印象进行判断是危险的。
• It's a dangerous time .
  这是个多事之秋啊。
• The motorboat cut across swift currents and skirted dangerous reefs .
  汽艇穿过激流，绕过险滩。
• Using milk that has not been pasteurized can be dangerous .
  食用未经消毒的牛奶可能会发生危险。
• It is dangerous to lean out of the window while the bus is in motion .
  行车时探身窗外是危险的。
• Her dangerous past was never quite out of her mind .
  她那危险的往事从来没有完全离开过她的脑子。
• Enemies behind the scene are more dangerous than those on the stage .
  幕后的敌人比前台的更危险。