idea/aɪˈdɪə/
n.1. 思想；概念clear idea明确的概念
2. 计划；打算；想法She'll have her own ideas about that.对那件事她会有自己的想法。
Just a few years ago, the idea of having a computer in one's home seemed far-fetched for most Chinese.几年前，对大多数中国人来说，在家里有一台电脑的想法还是不大现实的。
3. 主意；意见idea of price价格意见
4. 印象；猜想I had no idea about that.对那件事我没有印象了。
5. 了解；明白What time is it? I have no idea.几点了？我不知道。
6. 提议；念头I've had an idea. We could play football!我有个主意，我们可以踢足球。