五分背单词 ， 音频版 227 - 230。

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Episode 227 - Be frowned on/upon, Be derided and laughed at as a swot, Exuberant, Validity, Stepwise, Adolescence



Episode 228 - Be of great concern, In the first place, Differences in income levels, Give discounts on, Post 80s generation

Episode 229 - Dung, Crop waste, Health damaging pollutants, Small soot, penetrate deep into the lungs, Poorly ventilated dwellings, Air pollution is responsible for the death of 1.6 million people



Episode 230 - Without development aid, Go under without development aid, Before ... come along, Is portrayed as a continent of suffering, Juvenile crime, Excerbate the problem, All of that present wrong messagee, Lash out



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