a.

1. 理想的，完美的
   You're an ideal family.

   你们真是个模范家庭。

2. 非常合适的[（+for）]
3. 想像上的，假设的
4. 空想的，不切实际的
   Nobody would approve your ideal plans for reforming the system of government.

   没有人会赞成你的关于改革政体的不切实际的计划。

n.[C]

1. 理想[P1]
   My friends share democratic ideals with me.

   我的朋友们和我一样有民主思想。

2. 完美的典型，典范
   He considered the judge his ideal.

   他把那位法官视作自己的楷模。

adj.

1. most suitable; perfect.
2. desirable or perfect but existing only in the imagination:
   in an ideal world.
   ▸representing an abstract or hypothetical optimum.

n.