white zone

• 白环

white zone的用法和样例：

例句

1. Inside of that is a white ring of ivorine.
   里面是一圈由类似象牙的物质组成的白环。
2. Feeding small white rabbits showed that the mushroom was nonpoisonous.
   白环柄菇饲喂小白兔无毒。