象用其强有力的臼齿嚼碎食物。The elephant grinds its food with its powerful molars.“ 用精选的真人臼齿做的. ” 他告诉我." Finest specimens of human molars, " he informed me.象用其强有力的臼齿嚼碎食物.The elephant grinds its food with / between its powerful molars....
These vortices developed within 30 minutes or so of each other.这些涡旋的产生彼此相隔半小时左右.The transport process inside tube is also enhanced by Dean vortices.由于Dean旋涡的存在,缠绕式膜组件也可促进膜管内的传递.Vortices accelerate reaction rates of the u...