外国→｜Forests give us shade, quiet and o…〔08-05〕
→句子｜As we know, massive destruction of…〔06-18〕
→句子｜As we know, massive destruction of…〔05-09〕
→高中｜As is often read in the newspaper …〔08-27〕
→高中｜污染，人类的严重威胁(Pollution, a Terrible T…〔07-16〕
→高中｜The earth, the only mother of huma…〔04-22〕
→新闻｜March 12 (Bloomberg) Chinas accel…〔03-12〕
→新闻｜As much as 16 percent of the U.S. …〔03-11〕
