慢速英语视频:Warning System Keeps Swimmers Out of Polluted Water

视频下载[点击右键另存为]
Researchers are using computer models to predict the quality of ocean water. It now takes 18 to 24 hours for a laboratory to test the water. Public health experts say that amount of time can and should be reduced.
将本页收藏到：
上一篇：慢速英语视频:China Fights Stock Market Drop
下一篇：慢速英语视频:Fish Use Whole Bodies When They Eat

※相关链接※

• ·哪种语言最难学？外媒做了个排名，
• ·夏日炎炎吃西瓜：西瓜对健康居然有
• ·英语文摘:Xi, Putin to witness op
• ·英语文摘:China hits 400 mln vacc
• ·欧美文化:Feature: UK takes big s