two enormous bees, busily engaged in gathering resin from tree trunks两只个头巨大的蜜蜂正忙于从树干中汲取树脂

Her father was busily taking notes.她父亲正在忙于记笔记。

The two saleswomen were busily trying to keep up with the demand.两位女售货员忙不迭地努力满足顾客的需求。