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    • 急:英文句型

      ... directly from rain, standing water, or from soil moisture, against gravity without using energy or a pumping device. 是複雜句。其中有一個修飾名詞water的形容詞子句: it...

    • 有關SENSOR的問題

      ...sensor? Ans: Passive sensors generate electric signals without energy consumption from electronic circuits. Whereas, active sensors require...

    • 請問英文作文[Energy Conservation]怎寫?

      ...currently available resources. There are three types of energy conservation practices. The first is curtailment; doing without. For instance, cutting back on travel to reduce the amount of gasoline ...