Fissiumfs
[化] 裂片-铀合金; 裂片-铀合金试样; 裂变产物合金; ╃
🗣️ 情景例句
What's up?
什么事？
She likes to keep up with the latest fashion.
她喜欢赶时髦。
Your English is improving little by little.
你的英语正在渐渐提高。