14 counterbalance

counterbalance
(also counterpoise) n ~ (to sth) weight or force that balances another 平衡重; 平衡块; 平衡锤; 平衡力.
counterbalance v [Tn]
act as a counterbalance to (sb/sth) 对(某人[某事物])起平衡作用
    His level-headedness counter-balances her impetuousness. 他头脑冷静, 这可抵销一些她的急躁情绪.