我們聽(tīng)到自動(dòng)槍炮發(fā)出快速的射擊聲.We heard the rapid crackle of automatic gunfire.最快速的步行者, 中風(fēng)危險(xiǎn)性降低程度達(dá)40%,令人驚嘆.For the fastest walkers, the risk reduction was an impressive 40 %.輕向快速的呼吸有助于粒子的中心沉降.Central deposition of particles is favored...