winnow truth from falsehood

• 去伪存真； 辨别真假

winnow truth from falsehood的用法和样例：

例句

1. We should sift out the true from the false.
   我们应当去伪存真。
2. It's important to winnow truth from falsehood in scientific research.
   在科研工作中去伪存真是很重要的。
3. He can't distinguish between truth and falsehood.
   他不能辨别真假。
4. It's not easy to tell a true friend from a false one.
   辨别真假朋友不是件容易的事。