clear on明白无疑的, 不难懂的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clearing house gold certificate交换所黄金证券clearing and controlling center结算和监督中心clearing house loan certificate票据交换所贷款证券clear cell renal cell carcinoma肾透明细胞癌clearing both qifen and yingfen气营两清, 清气凉营clearing heat and cooling hlood清热凉血clear away dishes and leftovers收拾碟盘和剩菜剩饭Clear-cutting dead pine trees清除病死树clear the water from impurities除去水中污物clearing heat and cooling blood分期论治