1.It needs to be high enough to send an unmistakable signal to business.
碳价要定得足够高才能对企业发出一个明白无误的信号。
2.Zhou Enlai sent us another unmistakable signal.
周恩来又给我们发来了一个明确无误的信号。
3.Through these efforts, the world is sending an unmistakable signal: We're in this together, and we'll come through this together.
通过这些努力，世界会发出一个错不了的信号：那就是世界都在这场危机中，世界必将一起摆脱危机。