这种设备上的绳索使游泳者能够抓紧它或爬上其顶部，直到救生员抵达现场为止。
The ropes let swimmers cling to the device or climb on top of it until a lifeguard arrives on the scene.
他爬上最近的一棵树，扔下几个椰子，用小刀切掉顶部，递了一个给我。
He shinned up the nearest tree, threw down a couple of coconuts, then chopped the tops off with a machete and handed one to me.
他解释道，“你可以爬上沙丘顶部然后走下来或滑下来，这样沙子就会发出声响。”
You'll climb up to the top and either walk or slide down, as the sand makes its singing sounds.
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