By rule of thumb, the total thickness of pad and casting (at the pad location) should not be less than one-fifth of the metal-feedingdistance.
由经验法则，其总厚度的软垫及铸造(在垫板上的位置)，应不低于上就有五分之一的金属补缩距离。
2
A wild goat had passed before the mouth of the cave, and was feeding at a little distance.
原来是一只野山羊奔过了岩石，下在不远处吃草。
3
When it is feeding quietly close to "prey" to a certain distance, he was thin and had forked tongue sudden pulls out, suprahyoid mucus put "game" is firmly stick involved in the mouth.