（六）放射性同位素，是指化学元素中具有相同原子序数，但质量不同且能发生放射性衰变的核素。
Panindre and colleagues have even attached the detection system to drones, which could help firefighters faced with pinpointing a blaze in a high-rise building: "These drones can actually go around the building and capture the location of the fire."
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* @param {number[]} temperatures - 每日温度数组
疫情、地震、洪涝……历经各种风险挑战，防止返贫致贫的“铜墙铁壁”冲不倒、守得住！积石山的变化，正是中国为何能创造减贫奇迹的生动解答。