expectation of life

n.估计寿命

expand, expanded metal, expanded polystyrene, expanse, expansion, expansionism, expansionist, expansive, expansively, expansiveness, expatiate, expatriate, expect, expect of, expect sth. of sb., expectancy, expectant, expectant mother, expectantly, expectation, expected, expectorant, expectorate, expedience, expediency, expedient, expediently, expedite, expedition, expeditionary, expeditious, expeditiously, expel, expend, expendable, expenditure, expense, expense account, expensive, expensively,