Seim
abbr. simple effective index method 简单有效折射率法
🗣️ 情景例句
I enjoyed myself very much.
我玩得很开心尽兴。
Would it be possible for me to have a closer look at your samples?
可以让我参观一下你们的产品陈列室吗？
Yes, they are.
是的，他们也是。