Maxillary retrusion
[医] 上颌后移
🧩 词语组成解析
a. 颌的, 上颌骨的\\nn. 上颌骨
n. 牙齿的后移状态
🗣️ 情景例句
It can go beyond the school system, Ellen.
这可以推广到学校体制以外， Ellen。
To operate a steam locomotive
驾驶蒸汽机车
As long as all was still, the pen drew a straight line,
只要一切都是静止的，笔就会划出一条直线；