Seda
abbr. scanning electron diffraction attachment 扫描电子衍射装置
🗣️ 情景例句
Thank you.
谢谢。
Until the end of the week.
借到周末。
As a reasonable guess, they might, on an average, be 100 light years away.
据合理推算，外星人离我们平均距离也有100光年之远