one and the same meaning in English
同一个, 完全一样
同一人、时间，同一时刻，同一件事
完全一回事
Examples
- One and the same idea occurred to each of them .
他们都产生同样的想法。 - In this way, it is possible to pick out two quite different spectral ranges from one and the same seismometer .
这样，一台地震计就能拾取两种截然不同的频谱范围。 - Only in lucky special cases would both the inflation and the payments deficits get solved by one and the same dosage of demand restriction .
只是在某些侥幸的特殊情况下，才能用同样一张限制需求的处方来解决通货膨涨和收支逆差这两个难题。 - The truth is they are one and the same thing
真理是：没有分别，所指的都是同一位。