tense part of tympanic membrane

例句：

1. 1.The tightrope walker must be very nervous.
   走钢丝的人一定非常紧张。
2. 2.The tension in the relationship is high.
   关系中的紧张感很高。
3. 3. She tightened the seat belt before taking off.
   起飞前她系好了安全带。