情况危急——现在不是儿戏的时候。

The situation is critical - this is no time to ___play ___games.

谈判代表警告说，恐怖分子可不是在闹着玩；他们要求立即采取行动。

The negotiator warned that the terrorists were not ___playing ___games; they demanded immediate action.

在这场关乎重大的并购谈判中，我们可不能在数据上耍花招。

In these high-stakes merger talks, we can't afford to ___play ___games with the numbers.