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青少年自殺預防 : 挽救青春生命減少家庭悲劇
青少年自殺預防 : 挽救青春生命減少家庭悲劇
天氣 = Climate
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Discovery Education
天氣 = Climate
by:
Discovery Education
氣流
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Discovery Education
氣流
by:
Discovery Education
熱,風與氣壓 = Heat, wind, and pressure
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Discovery Education
熱,風與氣壓 = Heat, wind, and pressure
by:
Discovery Education
颶風 = Hurricanes
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Discovery Education
颶風 = Hurricanes
by:
Discovery Education
雷電暴風雨 = Thunderstorms
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Discovery Education
雷電暴風雨 = Thunderstorms
by:
Discovery Education
龍捲風 = Tornadoes
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Discovery Education
龍捲風 = Tornadoes
by:
Discovery Education
預報和氣象工具 = Forecasting and weather in...
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Discovery Education
預報和氣象工具 = Forecasting and weather instruments
by:
Discovery Education
水循環與雲 = The water cycle and clouds
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Discovery Education
水循環與雲 = The water cycle and clouds
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Discovery Education
天文的樂趣
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Discovery Education
天文的樂趣
by:
Discovery Education
太陽系的活動
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Discovery Education
太陽系的活動
by:
Discovery Education
熟人背叛
熟人背叛
暴力的來源
暴力的來源
了解暴力
了解暴力
遠離暴力
遠離暴力
資源減量
資源減量
重覆使用
重覆使用
垃圾問題
垃圾問題
瀕臨絕種
瀕臨絕種
全球暖化
全球暖化
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