【eva】評論
stress重要，壓力origin起源
【Giselle】評論
The epidemic’s流行性，傳染的 exact確切的，精確的 origin[ˋɔrədʒɪn]起源；由來 has never been determined決定, but the virus[ˋvaɪrəs]病毒is thought to spread to people from some sort of animal.
【Liz】評論
The epidemic’s exact 43 has never been determined, but the virus is thought to spread to people from some sort of animal.