Radioruthenium
射釕, 放射性釕
??? 情景例句
Let's just all calm down,
讓我們全都冷靜下來，
March comes in like a lion and goes out like a lamb.
三月來如雄獅，去如綿羊。
You soar effortlessly over high mountains and deep valleys.
你毫不費勁地飛越高山幽谷，