Bioclean
a. 无菌的, 十分清洁的
🗣️ 情景例句
Our teacher drills us in English.
我们老师让我们反复操练英语。
Grain by grain,and the hen fills her belly.
一颗接一颗，母鸡填饱肚。
When it did so, it sent sparks down to the ground and these immediately started a fire.
当它这样做时，把火花送到了地面，这些火花立刻引起了一场大火。