单词	He lacks confidence
释义	He lacks confidence. 他缺乏信心。
随便看	functional delay Functional delayed gastric emptying functional demand functional density functional dentin functional deparmentalization functional department functional departmentalization functional departments functional dependence functional dependence closure Functional Dependencies functional dependency functional dependency theory functional dependent functional depreciation functional derivative functional description functional description block functional descriptive material functional design functional design activity Functional Design Criteria functional design description functional design document