a distinction without a difference

• n. 人为的区别

a distinction without a difference的用法和样例：

例句

用作名词 (n.)

1. Human error may have been a contributing factor.
   人为的失误可能是一个起作用的因素。
2. Most bitches give birth easily, without the need of human help.
   大部分母犬分娩很容易，不需要人为的助产。