Nkebi ahịrịokwu 1: Sessile ka a bụ isi mbo ga-abụọ mbo ga-niile ụdi mbo, Otú ọ dị, n'okpuru nchebe nke envelopu. Nkebi ahịrịokwu nke 2: Sessiles na nke a bụ isi ga-abụ nke abụọ combs, Otú ọ dị niile ụdi combs n'okpuru nchebe nke envelopu. Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
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