He introduced a new writing system, currency, and set of measurements.

他引入了一种新的书写系统、货币和一套测量方法。

Students have to train for two sets of measurements, making science education even more difficult.

学生必需要学会使用两种系统，使得学习科学变得更困难。

The machine will do this a bunch of different times with different sets of photos until it has a set of measurements to carry out, so that they're unique for each person.

机器会用不同的照片组进行多次不同的测量，直到它有一组测量结果可供执行，这样它们对于每个人来说都是独一无二的。