know something from

• 辨别

know something from的用法和样例：

例句

1. I can discriminate right from wrong.
   我能辨别是非。
2. We must be able to tell the true from the false.
   我们必须能辨别真伪。

词汇搭配

• know something from a to z 对…知道得很清楚,对...