胸脯

例句：

1. 1. She put her hand on her chest, feeling a little embarrassed.
   她把手放在胸前，感到有点尴尬。
2. 2. The man was so tall that his chest almost touched the ceiling.
   那个人很高，他的胸部几乎碰到了天花板。
3. 3. He took a deep breath and let out a sigh, feeling his chest tighten.
   他深吸了一口气，然后叹了口气，感觉他的胸部紧绷起来。