conservation

n.保存，保护；守恒

conscientious objector, conscientiously, conscientiousness, conscious, consciously, consciousness, conscript, conscription, consecrate, consecration, consecutive, consecutively, consensus, consent, consequence, consequent, consequential, consequentially, consequently, conservancy, conservation area, conservationist, conservatism, conservative, conservatively, conservatoire, conservator, conservatory, conserve, consider, considerable, considerably, considerate, considerately, considerateness, consideration, considered, considering, considering that, consign,