复数： trampolines

One was an intravenous drug user who had slept outdoors on a trampoline .

一个是曾睡在室外蹦床上的静脉注射毒品使用者。

In the center of each of these giant life preservers is a trampoline measuring 30 meters in diameter .

在这些巨大救生圈的中心是一个直径为30米的蹦床。

Kick a ball , ride a bike , jump on a trampoline or just look up at the sky .

在室外你可以踢球、骑车、跳蹦床，或者只是看看蓝天。

Gaza city , gaza : palestinian children play on a trampoline at a day camp for girls tara todras-whitehill / ap

加沙加沙城：巴勒斯坦儿童在一家女童日营玩蹦床（美联社taratodras-whitehill）。

If the theory is true , then the earth should stretch the spacetime in which it sits , like a bowling ball would deform a trampoline .

如果这个理论是正确的，地球将会拉伸它所在的时空，就像一个保龄球使蹦床变形一样。