直线: straight line, sharply (rise or fall)...
轻视: contempt, contemptuous, to despise, to scorn, scornful...
苦练: to train hard, to practice diligently, hard work, blood, sweat, and tears...
下边: under, the underside, below...
折磨: to torment, to torture...
或许: perhaps, maybe...
日: sun, day, date, day of the month...
急剧: rapid, sudden...
记忆: to remember, to recall, memory...