n.皮下组织，下胚层，内胚层，基芽

The injection should be given just below the hypodermis, into the muscle.
注射应该在皮下层下方，进入肌肉中进行。
The hypodermic needle pierced through the skin and entered the tissue beneath.
皮下注射针穿透皮肤，进入了下面的组织。
The medication was administered via a hypodermic syringe.
药物是通过皮下注射器给予的。
The bee's sting penetrated the hypodermis, causing immediate pain.
蜜蜂的刺穿过了皮下层，立刻引起了疼痛。
Hypodermic tattoos involve injecting ink into the dermis layer of the skin.
皮下纹身涉及将墨水注入皮肤的真皮层。
The vet used a hypodermic needle to administer the vaccine to the dog.
兽医用皮下注射针给狗接种疫苗。
The hypodermis plays a crucial role in temperature regulation for mammals.
皮下组织在哺乳动物的体温调节中起着关键作用。
The hypodermic needle left a tiny mark on his arm after the vaccination.
接种疫苗后，皮下注射针在他的手臂上留下了一个小痕迹。
The doctor explained the process of giving a subcutaneous (hypodermic) injection carefully.
医生仔细解释了如何进行皮下（皮下）注射的过程。
The hypodermis contains a network of fat cells that provide insulation and energy storage.
皮下层包含一个脂肪细胞网络，提供绝缘和能量储存功能。