Woolly mammoths featured a unique combination of characteristics, including large downward-curving tusks and a hump of fat on their backs for water and energy storage.

长毛猛犸象具有独一无二的特征组合，包括向下弯曲的大象牙和背部隆起的脂肪，用于储存水和能量。

In a perfect circle the sky curved down to the level land, and the wagon was in the circle's exact middle.

在一个完美的圆圈中， 天空向下弯曲到平坦的地面，马车正好在圆圈的中间。

And this is an astragalus or an ankle bone, which has a both an upper and lower curved surface which allows the spring in the step.

这就是一块距骨或者说踝骨，其面同有向上和向下的弯曲，使之在走路有性。

And there are lots of different types of breaking pitches, but one of the most popular ones is the curveball, where the ball curves directly downward faster than normal.

有很多不同类型的突破投球， 但最受欢迎的一种是曲线球，球直接向下弯曲的速度比正常情况更快。

The cones are from five to eight inches long and about as large in thickness; rich chocolate-brown in color and protected by strong, down-curving nooks which terminate the scales.

圆锥体长 5 到 8 英寸， 厚度也差不多； 浓郁的巧克力棕色， 并由终止鳞片的坚固、向下弯曲的角保护。

The lower limbs curve downward, gradually take a horizontal position about half-way up the trunk, then aspire more and more toward the summit, thus forming a sharp, conical top.

下肢向下弯曲，在躯干的一半左右逐渐呈水平位置，然后越来越向顶点倾斜，从而形成尖锐的圆锥形顶部。

The cones are most beautiful, measuring from five to eight inches in length, and not much less in thickness, rich chocolate-brown in color, and protected by strong, down-curving hooks Which terminate the scales.

长度从五到八英寸不等， 厚度也不少， 呈浓郁的巧克力棕色， 并由结实的向下弯曲的钩子保护， 锥体最漂亮， 钩子终止于鳞片。

The lower limbs, like those of most other conifers that grow in snowy regions, curve downward, gradually take a horizontal position about half-way up the trunk, then aspire more and more toward the summit.

与生长在雪域的大多数其他针叶树的下肢一样，下肢向下弯曲，在树干的一半左右逐渐处于水平位置，然后越来越向顶端倾斜。

The main thing to try and do is to pull the tongue back slightly but bend the tip of the tongue down into the bottom of the mouth all whilst creating a very small round shape with your mouth.

主要要做的就是把舌头稍微向后拉，舌尖向下弯曲到嘴的底部，同把嘴巴张成一个很小的圆形。