音量: loudness, volume...
阶层: hierarchy, stratum, social class...
纠纷: dispute...
方: square, power or involution (math.), upright, honest, fair and square, direction, side, party (to a contract, dispute etc), place, method, prescription (medicine), just when, only or just, classifi...
雄厚: robust, strong and solid...
苦涩: bitter and astringent, pained, agonized...
沿线: along the line (e.g. railway), the region near the line...
