loose deposit疏松: loose; puff积: amass; store up; accumulate灰: ash积灰: ash buildup; ash deposit; dust deposit; soot deposit; soot formation疏松: 1.(土壤等松散; 不紧密) loose; puff 土质疏松。 the soil is porous.2.(使松散) loosen 疏松土壤 loosen the soil下载手机词典可随时随地查词查翻译