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空氣 - Air (a mix of mostly nitrogen, oxygen, carbon dioxide) is basically transparent.
氣流從機內湧出 - What you see are dust particles in the air but not air itself
氣流是可依稀見到有影 - The shadow comes from the dust particles.
有形之物才會有影 - This is not true. All non transparent objects will cast shadow. A piece of glass (有形) will not cast any shadow. |
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發表於 08-10-14 15:00