a.

1. 平的，平坦的
   Of course, no one now believes that the earth is flat.

   当然如今无人认为地球是平的。

2. （容器等）浅的[Z]
3. 平伏的，平卧的[Z]
   My book is flat on the table.

   我的书平摊在桌子上。

4. （轮胎）泄了气的
   Our car had a flat tire.

   我们那辆汽车有一只轮胎漏了气。

5. （啤酒等）走了气的；走了味的
6. 单调的，无聊的[F]
   After the excitement was over, she felt flat.

   令人兴奋的事过后，她感到平淡无味。

7. （拒绝等）断然的[Z][B]
   He gave me a flat refusal.

   他断然拒绝了我。

8. 【音】降音的；降半音的
9. （色彩）单调的，同样的
10. （费用，价格等）均一的，一律的[B]
    We pay a flat rate for every telephone call.

    我们打电话每次付相同的费用。

11. （电池）电力不足的，电用完的
12. （市场等）萧条的

ad.

1. 平直地，仰卧地
   Lie down flat and breathe deeply.

   平躺下，作深呼吸。

2. 【音】以降调
3. 恰恰，正好
4. 断然地
5. 无利息地

n.[C]

1. 平面，平坦部分
   I hit the table with the flat of my hand.

   我用手掌击桌。

2. 沼地；浅滩[P]
   We dug clams in the flats at low tide.

   退潮时我们在浅滩挖蛤蜊。

3. 泄了气的轮胎
4. 【音】降半音；降半音符号
5. 【俚】傻子
6. 平底鞋[P]

vt.

1. 使变平
2. 使降半音

vi.

1. 变平
   The bank flatted off for the last ten miles.

   河堤最后十英里渐趋平坦。

2. 降半音

n.[C]

1. （楼房的）一层
2. 【英】（在同一层楼上的）（一套）公寓房间
3. 【英】公寓大楼[P]

adj.

1. having a level surface; without raised areas or indentations.
   ▸not sloping.
   ▸having a broad level surface but little height or depth:

   a flat box.
   ▸(of shoes) without high heels.
2. dull; lifeless:
   a flat voice.
   ▸showing little or no activity:

   sales were flat.
   ▸(of a photograph) lacking contrast.
3. (of a sparkling drink) having lost its effervescence.
4. Brit. (of a battery) having exhausted its charge.
5. (of something kept inflated) having lost some or all of its air.
6. (of a fee, charge, or price) unvarying; fixed:
   a flat rate of £250.
7. (of a negative statement) definite and firm:
   a flat denial.
8. (of musical sound) below true or normal pitch.
   ▸ [postpos.] (of a key) having a flat or flats in the signature.
   ▸ [postpos.] (of a note) a semitone lower than a specified note.

adv.

1. in or to a horizontal position.
   ▸lying in close juxtaposition to a surface.
   ▸so as to become level and even.
2. informal completely; absolutely:
   I'm turning you down flat.
3. emphasizing the speed of an action or task:
   prepare a meal in ten minutes flat.
4. below the true or normal pitch of musical sound.

n.

1. the flat part of something.
   ▸ (flats) shoes with a very low heel or no heel.
2. (flats) an area of low level ground, especially near water.
3. informal a flat tyre.
4. an upright section of stage scenery.
5. (the Flat) Brit. flat racing.
6. a musical note lowered a semitone below natural pitch.
   ▸the sign (♭) indicating this.
7. N. Amer. a shallow container in which seedlings are grown.

v.

1. [usu. as adj. flatted] N. Amer. Music  lower (a note) by a semitone.
2. archaic flatten.

n.

v.