idea 英[aɪˈdɪə] 美[aɪˈdi:ə]
n. 主意，想法; [哲] 理念，观念; [乐] 乐句; 模糊想法;
[例句]It's a good idea to plan ahead
Some of his ideas about democracy are entirely his own.
This table will give you some idea of how levels of ability can be measured
By the end of the week you will have a clear idea of what your eating habits are
I had an idea that he joined the army later, but I may be wrong.