sieve deposition筛: sedge积: amass; store up; accumulate作用: act on; affect筛积: sieve deposition凝积作用;堆积作用: accretion下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:筛积作用,即可在微信中查询翻译