无法探察的英文：
undetectable

The null result of the Michelson-Morley experiment suggests that the effects of the ether are undetectable
迈克耳孙-莫雷实验的否定结果使人想到，以太的效应是不能检查到的。

The physical ramifications of an undetected STD range from chronic discomfort to sterilization or death
性病没有被查出，其后果轻则身体长期不适，重则不孕甚至死亡。