垫上运动的英文：
mat tumbling

mat是什么意思：
n. 席子；垫子；团，簇
v. 铺席于…上；缠结
adj. 粗糙的；无光泽的

The room is matted.
这屋子被铺上草席。

To press or mat(something) together.
压或（将某物）缠结在一起

The weeds matted together.
杂草缠绕在一起。

She matted up seedlings.
她把幼苗用草席盖起来。

In addition, they can be lacquered or mat.
并且，它们也可以制成光泽的或无光泽的。

tumbling是什么意思：
n. 摔跤，翻跟头，翻筋斗
adj. 歪斜状的

Toddlers keep tumbling over.
学步的儿童老是摔跤。

He tumbled into the meeting room.
他莽莽撞撞地走进了会议室。

The breakers came tumbling onto the shore.
浪涛滚滚而来拍打著岸边。

The incidence of tumble in day was the same as that in night.
跌倒不仅发生在活动频繁的日间,夜间跌倒例数几乎与日间相同。

The water frothed as it tumbled down the rocks.
水冲击在岩石上溅起了泡沫。