n.真皮

The dermis is the layer of skin beneath the epidermis that contains collagen and elastin fibers.
真皮是位于表皮之下的皮肤层，含有胶原蛋白和弹性纤维。
Sun exposure can cause damage to the dermis, leading to wrinkles and sagging skin.
日晒会对真皮造成损害，导致皱纹和皮肤松弛。
In tattooing, ink is injected into the dermis to create a permanent design on the skin.
在纹身过程中，墨水会被注入到真皮中以在皮肤上形成永久性的图案。
The dermis contains numerous blood vessels which help regulate body temperature.
真皮中含有许多血管，有助于调节体温。
Burns that reach the dermis can be very painful and may result in scarring.
烧伤如果触及真皮会非常疼痛，并可能导致留下疤痕。
The dermis houses sensory receptors that detect touch, pressure, pain, and temperature.
真皮内含感觉受体，可感知触觉、压力、痛觉以及温度变化。
During an allergic reaction, the immune system can cause inflammation in the dermis.
过敏反应时，免疫系统可能会引起真皮的炎症。
Laser therapy can stimulate collagen production in the dermis for anti-aging benefits.
激光疗法可以刺激真皮中的胶原蛋白生成，从而达到抗衰老的效果。
A biopsy of the dermis might be necessary to diagnose certain skin conditions such as basal cell carcinoma.
为了诊断某些皮肤病状（如基底细胞癌），可能需要对真皮进行活组织检查。
Injections into the dermis can also be used for cosmetic procedures like dermal fillers to reduce the appearance of wrinkles.
注射真皮也可以用于美容手术，如填充剂，以减少皱纹的外观。