乖巧: clever (child), smart, lovable, cute...
一模一样: exactly the same (idiom), carbon copy, also pr....
届时: when the time comes, at the scheduled time...
贫困: impoverished, poverty...
恋恋不舍: reluctant to part...
利息: interest (on a loan)...
夏季: summer...
起伏: to move up and down, to undulate, ups and downs...
呼声: a shout, opinion or demand, esp. expressed by a group...
源源不断: a steady flow (idiom); an unending stream...