insidious
/ɪnˈsɪdiəs/📚 12692 43 1六级托福Something that is insidious is unpleasant or dangerous and develops gradually without being noticed. 潜伏的; 暗中为害的
adjective [原级]<正式>潜伏的，隐袭的；阴险的，狡猾的
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年间不会产生明显效果。
- insidious 出现在下面的课文中
- Lesson 47 Too high a price? insidious 形容词: 暗中为害的
an insidious disease 潜藏的疾病 insidious jealousy 阴险的嫉妒
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