That they're holding them erect Which seems obvious because there's no tail drag marks in between dinosaur footprints There you go.

他们将它们竖立起来这似乎很明显，因为恐龙脚印之间没有尾巴拖曳痕迹。

Now, when water drips — say, from a faucet — each drop does kind of take a teardrop shape, as its tail drags behind it, but only for a split second.

当水从水龙头往下滴的时候，每滴水确实会呈现出泪珠的形状，它的尾巴拖在它身后，但只有一瞬间。

Then, remembering how his father had often told him that a kind deed is never lost, he swam to Alidoro and, catching hold of his tail, dragged him to the shore.

可他记起他爸爸经常跟他说，做好事永远不吃亏，他游到阿利多罗身边，抓住了它的尾巴，把它拽上了海岸。

They were plastered with mud some with blood too - and their ears were down and their whiskers drooped and their tails dragged in the grass, and their leader piped on his slender pipe a melancholy tune.

他们身上全是泥浆，有的身上还有血迹，耷拉着耳朵，胡子低垂着，尾巴也拖在草地上。它们的领队用短笛吹奏着一支忧伤的曲子。

You've probably seen pictures of Dimetrodon, and odds are those pictures showed the animal in a sprawling posture – kind of like it's doing a push up - with its belly and tail dragging on the ground.

你可能看过异齿龙的照片，很可能这些照片显示的是这种动物呈四肢伸展的姿势——有点像它在做俯卧撑——腹部和尾巴拖在地上。