tightness

例句：

1. 1.The tension in the room grew as everyone sat down.
   随着每个人都坐下，房间里的紧张气氛越来越浓。
2. 2. He felt a tightness in his chest as he stood up.
   他站起来时感到胸口一阵紧。
3. 3.The tightness in her voice suggested she was about to cry.
   她声音里的紧张暗示她快要哭了。