tracings
📖 中文释义
- [医]描记
🧩 词形变化
原形 tracing
📘 English Definition（英文释义）
- n. the act of drawing a plan or diagram or outline
- n. a drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original image
- n. the discovery and description of the course of development of something