由于安静小巧，它能够不被察觉地接近目标，并获得良好的观察效果。
Being small and quiet, it can get close to targets unobserved, for a good look.
当我们接近时，我们能观察到其他人的脚在里面走动。
As we approach, we can observe other peoples' feet walking around in it.
当我们接近时，我们能观察到其他人的脚在里面走动。
As we approach, we can observe other peoples' feet walking around in it.
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