electrode pick-up

例句：

1. 1. The device is designed topick up signals from the ground.
   该设备旨在从地面拾取信号。
2. 2. The pick-up system was used to monitor thetraffic flow.
   拾取系统被用来监测交通流量。
3. 3. The engineers were able topick up on the subtle changes in thedata.
   工程师们能够捕捉到数据中的微妙变化。