Newborn calves are not afraid of tigers. -- Young people are fearless.初生之 犊 不畏虎.The soldiers followed their fearless leader into the battle.士兵们随着他们勇敢的指挥官投入战斗.The boy seems completely fearless.这个男孩似乎毫不畏惧....
接种疫苗的成本合计约60万美元。The cost of the immunizations was about $600,000 all told.这种疫苗的问世是医疗保健领域的重大突破。The vaccine represents a quantum leap in healthcare.医疗工作者宣传关于接种疫苗的好处.Health workers spread the word about the benefits of immu...