皮下地
Subcutaneous \Sub`cu*ta"ne*ous\, a. Situated under the skin; hypodermic. -- {Sub`cu*ta"ne*ous*ly}, adv. {Subcutaneous operation} (Surg.), an operation performed without opening that part of the skin opposite to, or over, the internal section.
subcutaneously adv : below the skin; "inject subcutaneously"