平坦的英文：
flat; level

参考例句：

level out;Flatten out
使平坦

The whole landscape looked as flat as a pancake.
整个地形十分平坦.

Street A may be flatter than Street B.
A街可能比B街平坦。

Holland is flat, there are no mountains.
荷兰地势平坦，没有山。

Most of the province is as flat as a pancake.
那省的大部分地区地势平坦

Most of our county is as flat as a pancake.
我们县大部分地方非常平坦。

"Having a smooth, even, level surface"
具有光滑、平坦且水平表面的

They were just abreast of Mareciana, and beyond the flat but verdant Island of La Pianosa
他们现在正和马里西亚纳平行，还没到那平坦而荒芜的皮亚诺扎岛。

A boolean ring is absolutely flat
布尔环是绝对平坦的。

Smooth is the way that leads unto wickedness.
通往邪恶的路是平坦的。

flat是什么意思：
adj. 平坦的；扁平的；浅的；单调的
adv. 平直地；断然地
n. 平面，平地；一层；公寓；降半音
v. （使）变平；（使）降半音

The battery is flat.
电池快没电了。

The car has a flat.
这车有一只轮胎泄了气。

He was lying flat on the ground.
他平躺在地上。

The admission ticket is flat.
门票费是统一的。

level是什么意思：
n. 水平线，水平面；高度；层；水平；级别
adj. 水平的，同高度的；笔直的；平静的
v. 推平；毁坏；使平等；瞄准；变平；坦率诚实地对待

Level off the shelves with a spirit level.
用酒精水平仪把架子弄平。

But there is plenty of scope at that level.
然而在此水平上还是有足够的余地。

The worker levelled their looks at the foreman.
工人们用目光逼视着工头。

They leveled a field yesterday.
他们昨天平整场地了。

They leveled a building with the ground.
他们拆除了一座建筑物。