The starting level of yield is very important.

起始产量水平非常重要。

And today that starting level of yields is quite interesting.

今天，收益率的起始水平非常有趣。

Now, from your original starting level of 25, you have to make sure your opponent starts on a losing level every single turn— if NIM starts on a winning level even once, it’s game over for you.

现在， 从你最初的 25 级开始，你必须确保你的对手每回合都以失败的等级开始— —如果 NIM 哪怕只有一次以获胜的等级开始，你的游戏就结束了。