Bombycin
蚕素
🗣️ 情景例句
That's a very interesting question.
这是个非常有趣的问题。
Money spent on the brain is never spent in vain.
智力投资，决非虚掷。
Before very long the parents will be complaining that the child is so secretive and never tells them anything,
不要很久，家长就会抱怨孩子守口如瓶，什么事也不告诉他们，