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float  
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KK:[flot] DJ:[flǝut]

動變: 過去式:floated  過去分詞:floated  現在進行時:floating  

名複: floats  

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單選題

Most people have no idea what particulate matter (PM) is, but it actually ___ through the air, and with every breath we take, we breathe it in, and most of it isn't visible to the naked eye.


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