The South Pole would be the check point on circuit, snatching the data from space, processing them in computers and relaying them to the rest of the world.
南极将是轨迹的检查点，从太空中获取数据，用电脑处理，然后将数据传送到世界其他地方。
2
Check whether the control circuit is disconnected or contacted well.
检查相应控制回路是否断线或接触不良。
3
In a circuit, check key check whether the insulation wiring occurs, aging, soften crack damage.