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全城參與小海白二十週年慶祝活動 – 為地球發聲 之「一見小海白，環保有辦法」港鐵車廂環保宣傳橫額創作比賽
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Global Natural History Day 2016
GNHD is an international educational program from the United States, which is designed to inspire students’ interest in natural science and history outside the classroom and to connect students with their peers around the world.
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