每日背誦第一期21
Although traveling dust storms are nothing new, the dust now often contains chemical or metallic substances that contribute to respiratory illnesses and damage the environment. At present, a group of researchers in Asia is studying aerosol particles and their effects on the environment—and they have plenty of dust to work with.
雖然移動的沙塵暴沒什么稀奇，但現(xiàn)在那些沙塵通常含有引起呼吸道疾病和破壞環(huán)境的化學(xué)或金屬物質(zhì)。現(xiàn)在亞洲有一批研究人員正在研究懸浮顆粒及其對環(huán)境的影響──他們要研究的沙塵可多著呢！
