Bombycin
蚕素
🗣️ 情景例句
but my work keeps me busy.
但我老是忙于工作。
To run for freedom
为求自由而逃跑
Every time he wanted to come into the garden he would bark until someone opened the gate.
每当它想到花园里来时，便汪汪叫个不停，直到有人把门打开。