Variable-density track
[电] 可变密度轨迹
🧩 词语组成解析
track
[træk]
n. 小路，小道;痕迹，踪迹;轨道，音轨;方针，路线;
vt. 跟踪;监看，监测;追踪;
vi. 沿着轨道前进;沿着一条路走，旅行;位于一队列中;
track(draw)→足迹；轨道；线路；追踪
🗣️ 情景例句
Use a dictionary and grammar guide constantly.
经常使用字典和语法指南。
Lily is a Sophomore now.
莉莉现在大学二年级。
The noise had been so faint that no one though that the ship had been damaged.
由于这个声音非常轻，没人会想到船身已遭损坏。