1. The old wooden fence was sagging in the middle, making it clear it needed to be repaired.
这段旧木栅栏在中部下垂，很明显需要修理。

2. Her shoulders drooped with the weight of the heavy backpack, causing her posture to sag.
她因为背着沉重的背包而肩膀下垂，导致姿势不挺拔。

3. The fabric on the couch was sagging from years of use, creating an uncomfortable seating experience.
沙发上的织物因多年使用而下垂，使坐着变得不舒服。

4. The tree branches were sagging under the weight of the snow, creating a picturesque winter scene.
树枝因雪的重量而下垂，形成一幅美丽的冬日景象。

5. The roof of the old barn was sagging in the middle, indicating structural damage.
旧谷仓的屋顶在中部下垂，表明有结构损坏。

6. The skin on her face was starting to sag with age, prompting her to consider cosmetic procedures.
她脸上的皮肤因年龄增长而开始下垂，促使她考虑进行整形手术。