幼稚: young, childish, puerile...
必: certainly, must, will, necessarily...
体系: system, setup...
濒临: on the edge of, on the verge of, close to...
聚精会神: to concentrate one's attention (idiom)...
外貌: profile, appearance...
头顶: top of the head...
穿小鞋: to make sb wear tight shoes (idiom), to make life difficult for sb...
致力: to work for, to devote one's efforts to...
来到: to come, to arrive...
