You may place a quest card face up as a resource. When you complete a quest, flip it face down.

你可以面朝上放置一个任务卡作为资源。任务完成时，翻过来面朝下。

youdao

The flip-down microphone can easily fold up and out of the way, and considering just how light these are, they can be worn for hours on end (trust us, we tried) without any sort of ear pain and unusual pressure on your dome.

ENGADGET: Razer Carcharias headset: unboxing and impressions