xǔ / duō / jiào / cái / bǎ / Fēi / zhōu / dān / yuán / shuō / zuò / wéi / rén / lèi / qǐ / yuán / de / zhòng / yào / xué / shuō / zhī / yī

许多教材把非洲单源说作为人类起源的重要学说之一。

Many textbooks present the single-origin out-of-Africa theory as an important theory of human origins.