protraction /prәu'trækʃәn/ 📖 中文释义 n. 拖长, 伸长, 制图[医] [颌]前伸 🔗 释义中的汉语词 伸长制图 📘 English Definition(英文释义) n the consequence of being lengthened in durationn the act of prolonging something ← protracting P 字母词表 protraction radiation →