官兵: (military) officers and soldiers, officers and men, (old) government troops...
困惑: bewildered, perplexed, confused, difficult problem, perplexity...
涉嫌: to be a suspect (in a crime), to be suspected of...
哈: breathe out (with the mouth open), (interj.) ha!, (onom. for laughter), (slang) to be infatuated with, to adore...
歌曲: song...
借鉴: to draw on (others' experience), to learn from (how others do things), lesson to be learned (by observing others)...
顺便: conveniently, in passing, without much extra effort...
火候: heat control, maturity, crucial moment...
路子: method, way, approach...
朝气蓬勃: full of youthful energy (idiom); vigorous, energetic, a bright spark...