overbalance/ˌəuvəˈbæləns; ˌovɚ`bæləns/ v[I, Tn](cause sb/sth to) lose balance and fall over （使某人[某物]）失去平衡而倒下 He overbalanced and fell into the water. 他失去平衡跌入水中. If you stand up you'll overbalance the canoe. 要是站起来, 能把独木舟弄翻.
牛津英汉双解词典