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
He's got 20/20 vision.
他的视力很正常。
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
Whose shirt is that?
那是谁的衬衫？