clearall全部清除clearadj.清楚的；明确的；明白(某事)的；清晰的；清澈的；晴朗的；头脑清醒的v.清空；清除；澄清；放晴；使明确adv.清楚地；彻底地n.空地cleared as planned按计划清除clear market price公平市场价格clear octane rating不加铅辛烷值clear open-hearth净空clear-water scour清水冲刷clear up a question澄清疑点clear up one's debt清偿债务clear on to the end一直到底Clear Line of sight清晰视线clear octane number未加铅辛烷值