Refringency
折射系数
🗣️ 情景例句
Oh, I'm glad that's over.
噢 我真高兴终于结束了。
The ox when weariest treads surest.
牛困走得稳。
At least sorting out the things she should have discarded years ago was now being made easier for her.
这样一来，她倒是容易将那些几年前就该扔掉的东西找出来了。