BBC Media｜省纸节能的“去墨打印机”

Paper-saving 'de-printer'

Making paper takes lots of energy, and the pulp and paper industry is a huge emitter of greenhouse gases. So, welcome to the de-printer, a machine that allows you to re-use a sheet of A4 ten times over.

The secret's in a special, ultra-thin coating that's applied to the paper to stop the ink sinking in. To return the sheet to pristine white, you zap it with a high-powered laser and vaporise the ink, which can be trapped and used again.

It's said to use a fraction of the energy taken to make new paper, but there's no guarantee it will be commercially viable.

词汇表
pulp [pʌlp] 纸浆，浆状物
emitter [ɪ'mɪtə] 排放源，发出者；发射体
greenhouse gase [ˈɡriːnˌhaʊs] 温室气体（尤指二氧化碳）
de-printer [ˈprɪntə(r)] 去墨打印机
a sheet of [ʃiːt] 一张，一片（纸、布等）
ultra-thin coating ['ʌltrəθɪn] [ˈkəʊtɪŋ] 超薄涂层
apply to 涂，敷，抹
sink in [sɪŋk] 渗入，渗透
pristine [ˈprɪstiːn] 纯洁的，质朴的，崭新的
zap [zæp] （用激光等）快速照射
high-powered laser [ˈleɪzə(r)] 高功率激光
vaporise ['veɪpəraɪz] 使汽化，蒸发
a fraction of ['frækʃ(ə)n] 一小部分
guarantee [ˌɡærənˈtiː] 保证，担保
commercially viable [kəˈmɜː(r)ʃ(ə)li]['vaɪəb(ə)l] 商业上可行的

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