心弦

例句：

1. 1. She felt her heartstrings tighten when she heard the sad news.
   她听到那个悲伤的消息时，感觉心弦紧绷。
2. 2. He had a deep connection with his family, touching their hearts like a tender heartstring.
   他对家人有着深厚的感情，就像一根温柔的心弦触动他们的心。
3. 3. The story moved many people's hearts, touching them deeply.
   这个故事感动了许多人的心，深深地触动了他们。