刻苦: hardworking, assiduous...
抵消: to counteract, to cancel out, to offset...
就要: will, shall, to be going to...
努力: great effort, to strive, to try hard...
私自: private, personal, secretly, without explicit approval...
买: to buy, to purchase...
保险: insurance, to insure, safe, secure, be sure, be bound to...
密度: density, thickness...
铃声: ring, ringtone, bell stroke, tintinnabulation...
性价比: cost-performance ratio...
