Andy Canvin is a pioneer on the strange frontier of DNA genealogy.安迪-卡文是DNA谱系学奇异前沿的先锋人物.He had sat and repeated his family's genealogy to her, twenty minutes of nonstop names.他坐下又给她细数了一遍他家族的家谱，20分钟内说出了一连串的名字。He was ...
他只是众多需要帮助者之一.He was only one amongst many who needed help.教师是学生意义建构过程中的帮助者和促进者,而不是知识的灌输者.Teachers are the helpers and promoters instead of imputers of knowledge.他是我们的帮助者和保护者.He is our help and our shield....