"The advantage of these natural products is their unpredictability," said Varella.
“这些天然产物的优势是它们具有的不可预测性，”Varella说道。
2
Director Hector Babenco was a friend and patient of Dr Varella. He has done his friend a service in making this film.
本片的导演是原著作者的朋友兼病人，他拍摄本片时帮助了法雷拉医生。
3
"If it is difficult for us, then imagine for people from overseas," says Varella, whose project is one of a tiny number that has official permission from the Brazilian environmental agency, Ibama.