每日背诵第一期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.
虽然移动的沙尘暴没什么稀奇，但现在那些沙尘通常含有引起呼吸道疾病和破坏环境的化学或金属物质。现在亚洲有一批研究人员正在研究悬浮颗粒及其对环境的影响──他们要研究的沙尘可多着呢！
您支付 0.1元 就能下载这个MP3文件！立即支付
-
蒋健棠英语实用句子(114):Having the hotel grounds landscaped -
蒋健棠英语实用句子(115):Ann was all stressed out last week
-
蒋健棠英语实用句子(116):The rain spoiled our picnic
-
蒋健棠英语实用句子(117):That English exam was a real killer
-
蒋健棠英语实用句子(118):They ventured out on the rough sea
-
蒋健棠英语实用句子(119):Activities will interfere with your studies
每日背诵第一期21：等您坐沙发呢！