expedient

a.有用的，有利的 n.紧急的办法，权宜之计

expansionist, expansive, expansively, expansiveness, expatiate, expatriate, expect, expect of, expect sth. of sb., expectancy, expectant, expectant mother, expectantly, expectation, expectation of life, expected, expectorant, expectorate, expedience, expediency, expediently, expedite, expedition, expeditionary, expeditious, expeditiously, expel, expend, expendable, expenditure, expense, expense account, expensive, expensively, experience, experienced, experiential, experiment, experimental, experimentally,