counterbalance
(also counterpoise) n ~ (to sth) weight or force that balances another 平衡重; 平衡塊; 平衡錘; 平衡力.
counterbalance v [Tn]
act as a counterbalance to (sb/sth) 對(某人[某事物])起平衡作用
His level-headedness counter-balances her impetuousness. 他頭腦冷靜, 這可抵銷一些她的急躁情緒.