张口结舌speechless (lit. agape and tongue-tied)

朝气蓬勃full of youthful energy;vigorous;energetic;a bright spark

珍禽异兽rare birds and animals

争先恐后striving to be first and fearing to be last;outdoing one another

志同道合like-minded;fellow enthusiast

知足常乐satisfied with what one has

众所周知as everyone knows

追踪而去chasing closely (after someone)

自力更生regeneration through one’s own effort;self-reliance

自食其果suffer the consequences of one’s own doing;to reap what one sows (lit. to eat one’s own fruit)