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杨健生教授是一位经验丰富的生物学家,他与助手郁如在扬子鳄的研究上取得了重大进展,人工繁殖扬子鳄取得成功,从而避免了扬子鳄绝种的危险。讲起鳄鱼,他总是津津乐道。中午,他们在鳄鱼湖一处高坡安营
Professor Yang Jiansheng is an experienced biologist. He and his assistant Yu Ru have made great progress in the research of Chinese alligators. The success of artificial breeding of Chinese alligators avoids the danger of extinction of Chinese alligators. Speaking of crocodiles, he always relish. At noon, they camp at a high slope in Crocodile Lake