And if you noticed earlier that these are what we'd call powers of ten, these are just powers of two.

四位，八位吗？,如果你想想之前学习的十的次方，这些就是二的次方。

哈佛公开课 - 计算机科学课程节选

Just go with powers of ten, and then see what the answer should be.

每十进一，然后再看看答案应该是什么。

麻省理工公开课 - 固态化学导论课程节选