hypodermal fiber

例句：

1. 1. The skin is made up of hypodermal fibers that help protect the body.
   皮肤由表皮纤维组成，有助于保护身体。
2. 2. The hypodermal fibers in the skin are responsible for its elasticity.
   皮肤中的表皮纤维负责其弹性。
3. 3. The hypodermal fibers in the skin are also important for maintaining moisture balance.
   皮肤中的表皮纤维对于保持水分平衡也很重要。