外国→｜Forests give us shade, quiet and o…〔08-05〕
→原创｜女士们，先生们：我想说一些关于树的问题，我们也知道树对于人类来说很重…〔01-16〕
→作文｜Work and play is an eternal topic …〔01-06〕
→作文｜In 1999, I was about ten year old,…〔09-17〕
→原创｜随着现代生物学的快速发展，我们不难想象一旦先进的生物技术被应用于武器…〔09-05〕
→句子｜Therefore, to eliminate these prob…〔07-03〕
→句子｜I am convinced that human is able …〔05-09〕
→作文｜Last weekend, I wanted to swim in …〔04-15〕
