If you suddenly observe technetium in a sun-like star, you can be sure that somebody has put this element in the atmosphere. because in a natural way it is impossible to do this.

• 如果你突然观测到鎝存在于似太阳恒星中，你可以肯定，一定是有人将这个元素放到大气中的，因为在自然状况下这是不可能的。