忽高忽低: low and high...
大学生: university student, college student...
所在: place, location, (after a noun) place where it is located...
透: to penetrate, to pass through, thoroughly, completely, transparent, to appear, to show...
无穷无尽: endless, boundless, infinite...
嚷: to shout, to bellow, to make a big deal of sth, to make a fuss about sth...
天平: scales (to weigh things)...
养老金: pension...
等: class, rank, grade, equal to, same as, wait for, await, et cetera, and so on...
挑: to raise, to dig up, to poke, to prick, to incite, to stir up...
