so interested in someone or something that you do not pay attention to anything else 专注的；迷恋的
+on He seems fixated on losing weight. 他似乎迷恋上了减肥。
2
technical having feelings about sex that have not developed normally because you loved someone or something a lot as a child （因小时候过于爱恋某人或某物而导致性倾向不正常）固恋的，不正常偏爱的