on, of, or for the outside
that can be seen but is not natural or real
"he enjoyed the solemn externals of religion"
"the external auditory canal"
"extraneous light in the camera spoiled the photograph"
"relying upon an extraneous income"
"disdaining outside pressure groups"
"developing nations need outside help"
"an external concern for reputation"
The external worship of God.
出自： J. Butler
Fertility in the hybrid is independent of its external resemblance to either pure parent.
出自： C. Darwin