Seim
abbr. simple effective index method 简单有效折射率法
🗣️ 情景例句
Okay, I know just what you mean.
嗯，我明白你的意思。
My name is Thomas.
我叫汤姆斯。
It was true that he had just bought a lamb, he explained, but his lamb was black.
不错，他的确刚买了一只羔羊，阿列科解释说，但他的羔羊是黑色的。