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WordNet ÀÏ¹Ý ¿µ¿µ »çÀü °Ë»ö °á°ú : 2 ÆäÀÌÁö: 1
caesium a soft silver-white ductile metallic element (liquid at normal temperatures)
caesium an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field
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