New environmentally friendly glass新型可降解環(huán)保玻璃
主題語境:環(huán)境保護 篇幅:322詞 建議用時:6分鐘
1 A lot of manufactured glass today madefrom sand and sodium carbonate(碳酸鈉)canbe reused or melted down and rec(剩余3846字)
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