上唇

By apperance, Africans are more close to the quadrumana, such like their high cheekbone, deep eye socket and pitched lips.

从外貌上来看，非洲长相更接近于灵长目科，高颧骨，深目，上前凸。

The mandibles are usually lost, the labrum is reduced to a narrow transverse sclerite, and the labium is a small flap ( though its palps retain quite large).

上颚消失，上退化为一条窄横，退化为一小（须发达）。

The experiment is such: Researcher uses foam rubber or plastic from the female alar collect secretion, dissolve is in at the inunction after alcohol the labrum of a few females.

研究海绵从女性腋收集分泌物，溶于酒精后涂擦在一些女性的上。