余额: balance (of an account, bill etc), surplus, remainder...
外头: outside, out...
片面: unilateral, one-sided...
罚款: to fine, penalty, fine (monetary)...
后备箱: trunk, boot (of a car)...
总而言之: in short, in a word, in brief...
进攻: to attack, to assault, to go on the offensive, attack, assault, offense (sports)...
试卷: examination paper, test paper...
急剧: rapid, sudden...
脆弱: weak, frail...
