Binormal
[数]副法线, 仲法线, 次法线
🗣️ 情景例句
You've been like a second family to me.
你们就像我的第二个家一样。
Pupil. He is studying.
学生。正在学习。
Come up these steps with me, please, and be careful.
请跟我走上这些台阶，请小心点。