insidious [ɪnˈsɪdiəs]

例句:

• They focus on overt discrimination rather than insidious aspects of racism.
  他们关注的是公开的歧视，而不是种族主义的一些潜在问题。
  来自柯林斯例句
• the insidious effects of polluted water supplies
  供水系统污染的潜在恶果
  
• The changes are insidious, and will not produce a noticeable effect for 15 to 20 years.
  变化是悄然发生的,15到20年间不会产生明显影响。
  
• The second problem is a little bit more insidious.
  来自WSJ
• The problem is far more insidious and pervasive.
  来自SA
• Chronic pain is insidious, invisible, debilitating and widespread.
  来自SA