Ukuqhekeka kunokuchaphazela kakhulu ubomi bomntu, kubangela intlungu, ukungakwazi ukuhamba, kunye nokunciphisa umgangatho wobomi. Ukutyhubela iminyaka, itekhnoloji yezonyango iye yavela ukuze ibonelele ngeendlela ezingcono zonyango zokophuka, kwaye enye into entsha enjalo yi-1/3 yepleyiti yokutshixa ishubhu. Eli nqaku liza kuphonononga iinkcukacha
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