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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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霓虹燈
Chemistry; General chemistry
有符號 Ne 和 10 的原子序數的化學成分。雖然在宇宙中一個很常見的元素,它在地球上是罕見。標準下的無色、 惰性稀有氣體條件下,霓虹燈給出不同的橘紅色發光時使用任一低電壓霓虹燈輝光燈或高電壓放電管或霓虹燈廣告招牌。 ...