缺点：结束动作（虽然也是清晰的）但没有完全达到机头向下的角度，并且风筝偏向了一侧。

MINUSES:The exit (although clean)is not in a perfect nose-down orientation, and the kite is angled to one side.

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优点：动作开始在由“飘”形成的清晰的机头向下的起点上，并且绕线动作完成在一条垂直线上。

PLUSES: the trick is begun with a clean, nose-down entrance from a Fade, and the roll-up is in a straight line.

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“双泡沫”机头部宽大、向下倾斜，导致气流上升获得升力，所以它的尾翼可以更小。

The Double Bubble sports a wide, downward-sloping nose which airflow pushes up, so its tail wings can be much smaller.

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