Radiotechnology
n. 辐射能,(X光)在工业上的运用
🗣️ 情景例句
What can I do for you, sir?
先生，有什么需要帮忙的吗？
He who would climb the ladder must begin at the bottom.
爬梯必须从底层开始。
The weeks passed and the grass grew.
几个星期过去了，草长了起来。