Okay. Promethium, you hot little number.

好吧 钜元素 小火球。

Your watch may have artificial promethium.

您的手表可能含有人造钷。

As a result technetium, element number 43, and promethium, 61, are always radioactive (and are not found naturally in detectable quantities).

锝（43号元素）和钷（61号元素）都是放射性的，并且在自然中的存在数量无法侦测。