摘要： The American emphasis on the individual, rather than the group, affects children in a contradictory way.美国注重个体而非团体，这以一种矛盾的方式影响着儿童。 Always keep a punct 阅读全文

摘要： Frog Species Found in Big Apple Scientists discover new species all the time—on the order of 15,000 a year. One of the latest additions to the tree of 阅读全文