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Clear cell sarcoma明细胞肉瘤(肾除外, M-89643)clearing of checks票据交换clear ... of把 ... 从 ... 中清除clear and Subtract清除和减法clear up the truth澄清真相Clear All Channels清除所有水道clear off the snow扫除积雪clear confirmation清除确认Clearing Technique透明牙技术clearness of field视场的明净