Sometimes they switchparts and the person being interviewed will pick up their cameras or cell phone and start asking questions.
有时候他们转换角色，正在接受采访的人会拿起他们的摄像机或手机并开始问问题。
2
The problem is that many of the factors driving the hemoglobin switch also have other crucial roles in red blood cells and in other parts of the body; knocking them out creates severe new problems.
难题在于血红蛋白转变在红细胞内及人体亦有多项关键作用，消灭这些因素只会产生新的问题。
3
Mainly by the main control box, the electrical control box, show boxes, stepper motor, close to the switch, Switching itinerary, and other related component parts.