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造纸术是我国古代的四大发明之一。现在人们一般用木材、植物秸杆造纸,这对保护自然环境不利。利用废纸生产再生纸能大量节约天然材料。其实,这种纸我们自己也能制造。
Papermaking is one of the four great inventions in ancient China. People generally make paper from wood and plant straws, which is not good for protecting the natural environment. The use of waste paper to produce recycled paper can greatly save natural materials. In fact, this type of paper can be manufactured by ourselves.