Rnaa
[化] 放化中子活化分析
🗣️ 情景例句
but they probably had other things on their minds.
但他们也许还有其他的事想要做。
What's the typical farm product in this region?
这个地区典型的农产品是什么？
Has he moved to his new house yet?
他已经迁进新居了吗？