idea
/aɪˈdɪə/noun
1
- a thought or suggestion as to a possible course of action想法, 主意, 念头：
they don't think it's a very good idea.
他们觉得这不是个好主意。
1.1
- in sing. a concept or mental impression概念, 印象：
our menu list will give you some idea of how interesting a low-fat diet can be.
我们的菜单会让你知道低脂肪食谱可以有多大吸引力。
1.2
- an opinion or belief看法, 观念：
nineteenth-century ideas about drinking.
19世纪有关饮酒的观念。
1.3
- in sing. a feeling that something is probable or possible猜想, 猜测：
he had an idea that she must feel the same.
他有种猜测, 觉得她一定有同感。
2
the idea
the aim or purpose目标, 目的：I took a job with the idea of getting some money together.
我找了份工作, 目的是攒下点钱。
3
- Philosophy (in Platonic thought) an eternally existing pattern of which individual things in any class are imperfect copies【哲】（柏拉图哲学）理念（一种永存模式, 在此模式内任何类别中的单个事物皆为有缺陷的摹本）。
3.1
- (in Kantian thought) a concept of pure reason, not empirically based in experience（康德哲学）（非经验性的）理念, 观念。
短语
get（或give someone）ideas
- informal become (or make someone) ambitious, big-headed, or tempted to do something against someone else's will, especially make a sexual advance〈非正式〉（使）产生野心; （使）变得自负; 引诱某人做违背意愿的事（尤指提出性要求）：
MacDougall began to get ideas above his station.
麦克杜格尔开始有了超出自己地位的野心。
have (got) no idea
- informal not know at all〈非正式〉一无所知, 完全不知道：
she had no idea where she was going.
她完全不知道自己要去哪里。
not someone's idea of
- informal not what someone regards as〈非正式〉并非如某人所想：
it's not my idea of a happy ending.
这并非我以为的大团圆结局。
put ideas into someone's head
- suggest ambitions or thoughts that a person would not otherwise have had使某人生奢望, 令某人作他想。
that's an idea
- informal that suggestion or proposal is worth considering.〈非正式〉这主意（或建议）不错。
that's the idea
- informal used to confirm to someone that they have understood something or they are doing something correctly〈非正式〉对了, 就是这样：
'A sort of bodyguard?' 'That's the idea.'
“是保镖什么的吗？”“对了。”
the very idea!
- informal an exclamation of disapproval or disagreement〈非正式〉不行！没门儿！错！
词源
late Middle English (in sense 3)： via Latin from Greek idea 'form, pattern', from the base of idein 'to see'.