Biface
n. (旧石器时代的)两面器(即两面加工的一种石块, 为手斧的雏型)
🏥 医学释义
双界面
🗣️ 情景例句
Involve the entire family in a reading project.
让整个家庭都参与阅读计划。
What's the matter with you?
你怎么啦？
That's a big box. Is it heavy? Please let me help you.
这是个大盒子。重吗？让我来帮你。