young children looking at exotic carnivorous plants on display in botanic gardens - 校外實地考察 個照片及圖片檔兒童, 教育, 童年
teacher and young children exploring botanical displays during field trip - 校外實地考察 個照片及圖片檔教育, 環境保護, 兒童
teacher supervising a group of children boarding the school bus - 校外實地考察 個照片及圖片檔教育, 客貨車 - 商用陸上交通工具, 兒童