Mitochondria act as cellular energy plants, and when free radicals interfere with their biochemical pathways, mitochondria receive a signal to startcell death.
线粒体相当于细胞的能源植物，当自由基干涉其生物过程时，线粒体会接受信号开始细胞凋亡程序。
2
It split the difference, arguing that life would need both at the start: a whole cell.
此文采取折中态度，主张生命起源对这两点都需要：那应该是个完整的细胞。
3
As cars and plenty of other stuff -- from pill bottles to trees, he said -- start connecting to cell grids and the Internet, Bailey said they become more vulnerable.