usually ['juʒuəli] 词频1 词根: 使用

adv. 通常，经常，平常，惯常地;一直，向来;动不动，一般;素;

💡 usual通常的+ly副词后缀→通常地，惯常地

"The discovery of distillation is usually accredited to the Arabs of the 11th century."

近义：invariably, mostly, normally, oft, often, oftentimes 反义：infrequently, occasionally, seldom, sometimes

discount [dɪs'kaʊnt] 词频4 词根: dis

vt. 打折扣，减价出售;减息贷款;削价出售，打折;减价，减量; vi. 折扣;贴现率;贴现; n. 贴现;数目;（任何面值上的）扣除额;（考虑到故事、报告、报道等的夸张或偏见等）不全信;

💡 dis 取消+ count数量 → 取消一些金钱的花费\r\n → (价格、债款等)折扣

"Honesty seems to be rather at a discount today."

近义：waive, chuck, discard, discharge, dismiss, ditch 反义：hike, improvement, increment, intensification, interest, lift

additional [ə'dɪʃənl] 词频2

adj. 额外的，附加的;另外的，追加的;补充;外加;

💡 add增加 + ition表行为，后果 + al 具有...性质的 → a.附加的，追加的

"It is necessary to set down these additional rules."

近义：auxiliary, secondary, side, spare, accessorial, accessory 反义：inherent, medullary, overriding, pithy, pivotal, primal

quantity ['kwɑntəti] 词频1 词根: quant

n. 量，数量;定量，大批;数目;[语音学、韵律学]音量（指元音或音节的长短）;

💡 quant 多少，数量+ ity 表名词 → n.量，数量，分量

"She was burdened with a large quantity of parcels."

近义：magnitude, number, reckoning, value, sum, volume

deal [dil] 词频1

vt. [牌戏]分;分配;经营;施予; n. （一笔）交易;许多;待遇;发牌; vi. 论述;（有效地或成功地）处理;惩处;交易; adj. 冷杉木制的，松木制的;

"Don't worry; the deal was completely above board."

近义：give, behave, act, demean, deport, negotiation 反义：object, rebut, vary, differ, disaccord, disagree