常見(jiàn)例句雙語(yǔ)例句To investigate the effect of survey design, specifically the number of items and recall period, on estimates of household out-of-pocket and catastrophic expenditure on health.研究家庭預(yù)算外健康開(kāi)支和大病治療開(kāi)支的估算調(diào)查設(shè)計(jì)（尤其是項(xiàng)目數(shù)量和廻憶期）的傚果。 返回 survey on household expenditure