In the height of the bat, they are also under the ring to catch insects, but why they want to fly so high?
在高处的蝙蝠，它们也打着圈捕捉昆虫，可是为什么它们要飞的那么高呢？
Suspend a rubber tug ring at the puppy's eye level so it can pull on it, or bat it.
挂一个橡胶环，在幼犬眼睛的高度，让幼犬可以拉拽它，或是击打它。
Bat a decisive factors of ring failure are the adhesive wear and fatigue wear.
而钢领失效的决定性因素是粘着磨损和疲劳磨损。
Bat a decisive factors of ring failure are the adhesive wear and fatigue wear.
而钢领失效的决定性因素是粘着磨损和疲劳磨损。
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