未改变的

These and other health changes are attributed to Splenda remaining unabsorbed in the gut.

这些问题和其他健康状况改变是由于代糖仍有部分未吸收遗留在肠道内。

Darwin expected species to change slowly, but not at the same rate – some organisms such as Lingula were unchanged since the earliest fossils.

达为物种变化是缓，但不是以同样变化--一些如海豆芽一样生物从最早化石以来未发生改变。