Biotin
n. 生物素\\n[化] 生物素; 维生素H
🗣️ 情景例句
Why don't you speak to Dad?
你们为什么不跟爸爸说说看？
But it looks like that's out of the question.
但现在看起来不太可能。
Thus the rods, by falling, and by the direction in which they fell,
木棒倒下的多少和倒下的方向