变迁: changes, vicissitudes...
玩: to play, to have fun, to trifle with, toy, sth used for amusement, curio or antique (Taiwan pr. [wan4]), to keep sth for entertainment...
优先: to have priority, to take precedence...
盖: lid, top, cover, canopy, to cover, to conceal, to build...
芯片: computer chip, microchip...
胆小: cowardice, timid...
特长: personal strength, one's special ability or strong points...
拖延: to delay, to put off, to procrastinate...
反馈: to send back information, feedback...
节水: to save water...
