expiration

n.期满

expendable, expenditure, expense, expense account, expensive, expensively, experience, experienced, experiential, experiment, experimental, experimentally, experimentation, expert, expert cook, expertise, expertly, expertness, expiate, expiation, expire, expiry, explain, explanation, explanatory, expletive, explicable, explicate, explicit, explicitly, explicitness, explode, exploded diagram, exploit, exploitable, exploitation, exploration, exploratory, explore, explorer,