While this is a pretty safe technique – the worst I've experienced doing it is lots of nausea – I am aware that there is often a good reason we are covering something up in the first place.

这是一个非常安全的疗法—我经历过的最坏情况是它使我失眠很多次—我觉得我们起初掩饰感觉的时候总有一个很好的借口。

youdao

This can lead to something called an epidural haematoma, where blood builds up between the outer covering of the brain and the skull, with consequent pressure on the brain itself.

这种情况会产生硬膜血肿，也就是血液充满大脑外膜和颅腔，压迫大脑本身。

youdao

Why do I always suspect that people wearing perfume are covering something up?

我为什么老是怀疑用香水的人是在掩饰什么？

youdao

This makes perfect sense too, as you typically hit said button when you want to quickly watch the last eight seconds of programming again, and not covering up any part of the action for four seconds is something every DVR should do.

ENGADGET: DirecTV Genie whole-home DVR review HD