add to
phrasal verbadd to something
to increase something in size, number, amount, etc. 使（数量）增加；使（规模）扩大 The bad weather only added to our difficulties. 恶劣的天气更增加了我们的困难。 The findings add greatly to our understanding of this period. 这些发现大大增加了我们对这一时期的理解。 to add significantly/considerably to something 显著地/显著地增加某物 The house has been added to (= new rooms, etc. have been built on to it) from time to time. 这座房子一次又一次地扩建。