difficult ['dɪfɪkəlt] 词频1 词根: di

adj. 困难的;难做的;难解的;不易相处的;

💡 dif不+fic做+ult表名词→不好做→困难的

"The short story is a difficult art form to master."

近义：rough, troublesome, complicated, arduous, intricate, labored 反义：uncomplicated, basic, cushy, doss, easy, facile

usual ['ju:ʒuəl] 词频1 词根: 使用

adj. 通常的，常有的，常见的;平常的，普通的;平时的，平日的;一向的，老是那一套的;

💡 后缀:al 表示属于...的,具有...性质的,如...的

"The letter was written in her usual acerbic style."

近义：normal, ordinary, regular, rife, routine, standard 反义：infrequent, irregular, matchless, nonconforming, atypical, peculiar

police [pə'li:s] 词频1

n. 警察部门;警方;警察;治安; vt. （警察、军队等）巡查;维护治安;（委员会等）监督;管制; adj. 警察的;有关警察的;

💡 破（po）例（li）让嫦娥（ce）当 警察

"A police car drew abreast of us and signalled us to stop."

近义：herd, monitor, patrol, picket, track, troll

time [taɪm] 词频1

n. 时间;时刻;时代;次; vt. 为…安排时间;测定…的时间;调准（机械的）速度;拨准（钟、表）的快慢; vi. 合拍;和谐;打拍子; adj. 定时的;定期的;[美国英语]分期（付款）的; int. [体育]时间到，（一场或一局等的）比赛时限，暂停;

"I can only carry two at a time."

近义：clock, lifetime, period, season, chapter, aeon