Figures of eight till it's combined.

呈 8 字形切，直到粘到一起。

Make sure you dig down to the bottom and you're cutting through in that figure of eight.

一定要挖到最底下，呈 8 字形切开。

So, take your pen and we're going to make a figure of eight with your pen.

所以，拿起你笔，我们要用你笔画一个字 8。

Tracking its movement in minute detail, researchers found that the snail's wingtips trace out a figure of eight to generate lift, just like of those of an insect.

研究者仔细追踪这种海螺，发现它翅膀末端能伸出字8那样形状来产生支撑力，就像其他昆虫那样。

Most birds flap their wings up and down, generating their lift force on the downstroke of the wing, but hummingbirds rotate their wings in a figure of eight motion.

大多鸟类都会上下拍打翅膀，在翅膀向下时产生升力，但蜂鸟却以 8 字形旋转翅膀。

So you're going to use both hands and you're going to go down to your feet, and you're going to make a figure of eight. Okay. How are you doing?

所以你要用双手，你要站起来，然后你要画一个 8 字。好。你好吗？