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

据我所知，这些都是意义活动。

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.

她有一种叫做 PEA 西，这是一种脉搏电活动，所以她心脏仍然有电西运转，但她心脏根本没有跳动。

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每个工作日浪费意义活动上分钟数。