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Ntsug Cov Tshuab Ntshawb Khaub Ncaws

Yog tias koj tab tom nrhiav tshuaj lom neeg, biology, tshuaj, thiab khoom noj khoom haus ntsug tshuab los ntawm Tuam Tshoj ntsug nqus cov tshuab nqus cua tshuab, cov neeg muag khoom thiab lub Hoobkas, lossis tshawb xyuas lub tshuab nqus tsev nqus cov thawv ntim tshuab. Ntsuas.
Tawm tswv yim
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