lack copper的相關資料：
臨近單詞
lacker
lack
Lack of hospitality or friendliness.
Lack of angulation is objectionable.
lack of clear-cut job responsibility
lacking patterns especially in color.
Lack of success decreases confidence.
lacking principles or moral scruples.
lacking sufficient water or rainfall.
lacking justification or authorization.
Lacking distinct crystalline structure.
lacking general education or knowledge.
