A person or group that plays a main role in a conflict or struggle.
The workers' union was the main agonist in the labor dispute.
工會是勞資糾紛中的主要參與者。
A muscle that contracts to cause movement in a certain direction.
When you flex your arm, the biceps are the agonist muscles.
當你彎曲手臂時,二頭肌是主動肌。