Didymiumdi
[化] 钕镨(混合物)
🗣️ 情景例句
During your computer classes, did they teach you how to fix a cooling fan?
在你的电脑课程，他们是否教过你如何修理散热风扇？
Let's just hope it doesn't get cold again.
但愿不会再冷。
Do you give each other presents at Christmas?
圣诞节你有送礼物给别人吗？