I take a firm grasp on the rope from slipping.
我紧握住绳子不让它滑掉。
If you take the reflections from the hyperbolic mirror for the objects on the desk, you will for sure make a vain attempt to grasp them.
当你误把经双曲面镜反射的映像当作平台上存放的实物而用手去抓时，当然是什么也抓不到了。
If you take the reflections from the hyperbolic mirror for the objects on the desk, you will for sure make a vain attempt to grasp them.
当你误把经双曲面镜反射的映像当作平台上存放的实物而用手去抓时，当然是什么也抓不到了。
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