He got called for a three-second violation for staying too long in the key.

three-second 是由数词 three（三）和名词 second（秒）组成的复合形容词，表示"三秒的"。 violation 是名词，来自动词 violate（违反），指"违反规则的行为"。 three-second violation 是篮球术语，指"进攻球员在对方禁区内停留超过三秒"的违例行为。