So here, we can only say that there is a range of possible rates of senescence of the radioactive sample, and if there is a really tiny rate of senescence, that range would still include zero.

• 所以，在这里，我们只能说，放射性样品衰老可能的速率有一个范围，如果有一个衰老的真正极小速率，那么该范围仍然应当包括零。