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Toys and games

1) Devices that are used exclusively for recreation and play. Toys are most often used with children and pets and as a medium of education and development. Toys are not always obvious in their nature. A simple bottle can be considered a toy if an individual uses it for recreational use. 2) Games are structural activities used for physical or psychological education. In most cases, games are recreation. However, games can also be considered work. For example, a professional soccer game is a career to the participants.

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拮抗作用

Environment; Environment statistics

反對影響生產的藥物、 激素和其他物質生活的系統上。

污水處理

Environment; Environment statistics

有機廢物和廢水產生的住宅和商業場所。

淨提取水

Environment; Environment statistics

返回的水和管網末梢水之間的區別。請參閱 還水的抽象。

生態平衡

Environment; Environment statistics

平衡,和生物與環境的和諧共存。

發酵

Environment; Environment statistics

不完整的分項數位的食物分子,尤其是糖類、 在無氧。

酸化

Environment; Environment statistics

氫離子,通常表示為環境介質的 pH 值的增加。

生化需氧量 (BOD)

Environment; Environment statistics

溶解氧生物為目前在水中的有機物質的有氧分解所需。

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