我很荣幸地把格林博士，一位加拿大学者，介绍给你们大家。
I have the honor to introduce Doctor Green, a Canadian scholar, to all of you.
“因为铁影响脑部发育，所以大家特别关心它”，格林博士说。
"Iron is a big concern because it affects brain development," says Dr. Greene.
“因为铁影响脑部发育，所以大家特别关心它”，格林博士说。
“Iron is a big concern because it affects brain development,” says Dr. Greene.
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