4周搞定2000+托福核心词
excavation = ex(出) + cav(洞) + ate(做，使) + ion(表名词) = 出洞→挖掘
exceedingly = ex(出) + ceed(走) + ing(形容词) + ly(表副词) = 走出→超出地
expedition = ex(出) + ped(脚) + ition(表名词) = 走出去→冒险
bipedal = bi(两) + ped(脚) + al(...的) = 两足动物的；二足的
recipiient = re(回,翻) + cip(握住) + ient(表名词) =
deficient = de(下面) + fic(制造) + ient(表名词) = 做得不够的→不足的
能把脚跨出去→方便的、权益的；权宜之计
expedient
常考释义
adj. 便利的；合算的；有利的；权宜之计的
They adopt the measures they regard to be most expedient.
他们采取了他们认为最便利的方法。
It is not just politically expedient, but right in principle.
这不仅是政治上的权益之举，而且原则上也是正确的。
The principality has also been considered fortunate because its early rulers, descending from the youngest son of Alexander Nevskii (1220?-1263) and thus representing a junior princely branch, found it expedient to devote themselves to their small holdin
同时，莫斯科的另一大幸运之处在于，继圣亚历山大·涅夫斯基（1220-1263）最小的儿子之后的早期帝国统治者们都是一批年轻的王子。他们认为相比在别处实战他们的雄心壮志，致力于发展自己所拥有的小片土地才是权宜之计。
来源于：阅读EXTRA3 P2n. 应急的手段；权宜之计
Incomes controls were used only as a short-term expedient.
控制收入只是短期的应对策略。
Surgical waiting lists were reduced by the simple expedient of striking off all patients awaiting varicose-vein operations.
采取了将所有等待进行静脉曲张手术的病人从名单上删除的简单做法，这一权宜之计使得外科手术等待名单得以缩减。
The story was a temporary expedient.
这一借口是临时的应急之策。
adj. 适宜的；得当的；适当的
It is expedient that an atonement should be made.
当务之急是要进行补偿。
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