Njengoba ubuchwepheshe buthuthuka, imboni yezokuxhumana igxile kakhulu ezinhlelweni zokuxhumana ezincane, ezilula, namuhla singathanda ukwethula indlela yokuthatha isihlungi se-cavity njengesiphathi semojula ukuklama isistimu encane ukuze ihlanganise izingxenye ezingenzi lutho nezisebenzayo, futhi yini i-adva yayo. ..
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