It's all senseless activity as far as I can tell.

据我所知，这些都是意义活。

She had something called PEA, which is pulseless electrical activity, so she still had electric stuff going on in her heart, but her heart wasn't beating at all.

她有一种叫 PEA 西，这是一种脉搏电活，所她心脏仍然有电西在运转，但她心脏根本没有跳。

By conducting a time-use survey of 5,000 office workers in America and Britain, the researchers identify the number of minutes that people waste on pointless activities each working day.

通过对美国和英国 5, 000 名上班族进行时间使用调查，研究人员确定了人们在每个工作日浪费在意义活上分钟数。