a piece of solid
问题描述：
a piece of solid
不是说一块固体。
原文是 your prediction is certainly a piece of solid.英语是否地道？
答
your prediction is certainly a piece of solid.
翻译：你的预言很准.
a piece of solid 一块固体
所以意义为“坚不可摧,标准的,不能打破的”