1. Everyone has someone whom they don't think of often but has a firm place in their heart.2. He's an inveterate liar. He's hopeless.3. How do people change a deeply ingrained habit such as smoking?4. ingrained habit or taste or behavior or infection or problem or notion
 ingrained; deep-seated; deeply rooted inveterate a firm place用在形容根深蒂固的習慣, 口味, 喜好, 行為, 感染, 問題, 觀念等等. 用在人.a firm place in my heart = 在我的心中的一個根深蒂固的位置Everyone has someone whom they don't think of often but has a firm place in their heart. = 每個人總有一個人，在你的心中留下一個根深蒂固的位置，雖然你不常想起他。
1. 根深蒂固的口味 or 行為 or 感染 or 問題 or 觀念2. 一個根深蒂固的說謊者
Many people in third world countries are living in unsanitay conditions.