（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。
"I want to make it clear to those who are trying to take money from the plane involved in this tragedy that this money has no legal value since it has not been issued by the Central Bank and does not have a serial number, and that attempting to use this money is a crime," the Minister of Defence, Marcelo Salinas, said.。关于这个话题，搜狗输入法2026提供了深入分析
这些问题的答案，都越来越清晰。。关于这个话题，91视频提供了深入分析
大年初十，村里举行游神活动，往年应该是阿爸去的，今年由我替他参加。南方周末记者郑彩琳摄