Ketosubstrate
酮基底物
🗣️ 情景例句
We need a man who knows the ropes.
我们需要位内行人士。
I usually feel timid in the presence of very bright people.
站在聪明人面前，我感到羞怯。
Students often create amusing situations which are funny to everyone except the victims.
大学生们常常做的是制造一种可笑的局面，使大家笑上一场，当然受害者是笑不出来的。