Slave tracking
[电] 副跟纵
🧩 词语组成解析
slave
[slev]
n. 奴隶;完全受控制的人;从动装置;
v. 苦干;辛勤地工作;
tracking
['trækiŋ]
n. 跟踪;
v. 跟踪( track的现在分词 );跟踪摄影;留下（脏）足迹;追随（潮流等）;
🗣️ 情景例句
Thanks a lot.
多谢。
His opening remarks were serious.
他的开场白说得很严肃。
I hope you are well. Thank you for your last letter.
愿你身体健康。感谢你上次来信。