inactivity; showing an unusual lack of energy; "the general appearance of sluggishness alarmed his friends" 同义词：languor, lethargy, sluggishness, phlegm,
the property of having little or no contrast; lacking highlights or gloss 同义词：lusterlessness, lustrelessness, mat, matt, matte,
the property of having two dimensions 同义词：two-dimensionality, planeness,
a deficiency in flavor; "it needed lemon juice to sharpen the flatness of the dried lentils"
a want of animation or brilliance; "the almost self-conscious flatness of Hemingway''s style"
例句与用法
1.
Juliet's voice held the flatness of defeat . 朱丽叶的声调因挫折而无精打采。
2.
Not a single tree relieved the flatness of the plain . 平原上单调得毫无变化，连一棵树都没有。
3.
The unequivocal flatness of the countryside came almost as a shock . 那一带一望无际的平原，看上去简直令人吃惊。
4.
Flatness can be determined by covering a surface with an potically flat glass . 用一光学平面玻璃覆盖一个表面，可以测量平整度。
5.
As he had grown extremely fond of london, he cursed the flatness of exile . 由于他对伦敦已经产生了浑厚的感情，他诅咒这不可抗拒的流亡。
6.
A haze rested on the low shores that ran out to sea in vanishing flatness . 却见那低平的海岸线，沿海伸展，渐渐消失，上面静静地飘着一层薄雾。
7.
Thomas hudson looked out at the flatness of the blue sea and the darker blue of the gulf . 托马斯赫德森呆望着湛蓝的海面，海面水平如镜。在海湾那儿，都是深蓝一片了。
8.
Dimensional measuring . part 3 : flatness deviation 尺寸测量.第3部份：平整度偏差
9.
Flatness sinewave relative to 1 khz , autorange 平坦度相对于1khz正弦波,自动量程
10.
Door leaves - measurement of defects of general flatness 门扇.一般不平度的测量
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