tell from

• • [亦作 tell by] 从…可看出；通过…判断出：

    I could tell by his face that he was angry.

    我能从他的脸上看出他生气了。

  • 分清…；区别…，把…与…区分开：

    to tell the real from the false

    区别真伪

    Can you tell an ox from a cow?

    你分得出公牛和母牛吗?