unilateral
adj. 单方的，单边的；单侧的，单面的；（父母）单系的；舌边音
例句
They were forced to take unilateral action.
他们被迫采取单方面行动。
《牛津词典》
Kinship is unilateral while friendship and love are bilateral.
亲情是单方面的，而友情和爱情是双方面的。
The French tax is not just a unilateral move by one country in need of revenue.
法国的税收并不是一个需要税收的国家单方面采取的行动。
