Seda
abbr. scanning electron diffraction attachment 扫描电子衍射装置
🗣️ 情景例句
I'm twenty-nine.
我二十九岁。
Measure thrice before you cut once.
三思而后行。
They leave unwanted objects in drawers, cupboards and attics for years,
他们在抽屉里，碗柜中、阁楼上堆放着一些不用的东西，一放就是好几年，