What makes the distribution normal is that it follows this curved shape.

分布普不普通，就取决于其是否为钟型曲线。

They use graphics libraries with ready-to-go functions for drawing lines, curves, shapes, text, and other cool stuff.

他们使用带有现成函数的图形库来绘制直线、曲线、形状、文本和其他很酷的东西。

A " crescent" is a curved shape, sort of like a moon, and it's used instead of the cross in many predominantly (or mostly) Muslim countries.

“新月” 是一个弯曲的形状， 有点像月亮，在许多主要（或大部分）穆斯林国家使用它代替十字架。

That curved shape, combined with Owen's suspicion  that the teeth grew constantly when the animal was alive, led Owen to think that Toxodon might  have been the largest rodent ever discovered.

这种弯曲的形状， 再加上 Owen 怀疑动物活着时牙齿会不断生长，这让 Owen 认为 Toxodon 可能是迄今为止发现的最大的啮齿动物。

Its mouth was some eighty meters in diameter … crystal teeth with the curved shape of crysknives glinting around the rim … the bellows breath of cinnamon, subtle aldehydes … acids… .

它的嘴巴直径大约有八十米… … 水晶牙齿的边缘闪闪发光，弯曲的水晶刀形状… … 肉桂的风箱气息，微妙的醛类… … 酸类… … 。

Could be a clearing in the woods surrounded by a bunch of tall trees or a spot where a tree has grown into a curved shape that looks suspiciously like a seat.

可能是树林中的一块空地，周围环绕着一堆高大的树木，也可能是一棵树长成弯曲形状的地方，看起来可疑地像一张椅子。

When you build an arch, or a curved shape for a door for example, and you use rocks or bricks, there's a large stone at the top of the arch – at the center of the arch that we call the keystone.

当你建造一个拱门， 或门的弯曲形状时，你使用岩石或砖块，在拱门的顶部有一块大石头——在拱门的中心， 我们称之为拱心石。