be subject to a rule/law/penalty/tax etcif you are subject to a rule, law, penalty etc, you must obey the rule or pay an amount of money 须遵守规则/须遵守法令/须缴纳罚款/须缴纳税款等 Violators are subject to a $100 fine. 违者罚款 100 美元。
→ be subject to a rule/law/penalty/tax etc at subject2(2)