Strontium 90
n. 锶九十（核爆炸时释放的放射性物质）
📖 牛津释义
strontium 90
radioactive form of strontium found in the fall-out from nuclear explosions and extremely harmful to people and animals when taken into the body 锶 90（锶的放射性同位素）.
🧩 词语组成解析
[化] 锶Sr\\n[医] 锶(38号元素)
ninety
🗣️ 情景例句
He's a real two-timer.
他用情不专。
Punctuality is the soul of business.
严守时间是办事情的重要原则。
' I continued driving and after some time,the examiner tapped loudly,
”我继续往前开着。过了一会儿，主考人砰砰地敲了起来。