“变大”用英语怎么说

进入睡眠状态时，我们的脑电波振幅慢慢变大。As we fall asleep the amplitude of brain waves slowly becomes greater.那个气球充气后就变大了.The balloon enlarged as we pumped air into it.这些巢每年都在变大，最终可能会把树枝压弯。These nests increase in size each year, and can ev...