1. Rutherfordium is a synthetic element that was first discovered in 1964.
(拉瑟福乌市是一种合成元素,于1964年首次被发现。)
2. The properties and behavior of rutherfordium are still being studied due to its rarity and short half-life.
(由于其稀有性和较短的半衰期,人们仍在研究拉瑟福乌市的性质和行为。)
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