...aboriginal forests; primal eras before the appearance of life on earth; the forest primeval; primordial matter; primordial forms of life.原始森林；地球上生命出现之前的原始时期；原始森林；原生物质；生命的原始形式。 tropocollagen [生化]原胶原(蛋白) .
Though foxes are of recent introduction in Australia (having been brought for sport by British settlers), many marsupial predators, now extinct, were present before the arrival of man in both his Aboriginal and his European forms, so the ecological system of plants, herbivores and carnivores in the eucalyptus forests would probably not have been that different in the evolutionary past.