Refringency
折射系数
🗣️ 情景例句
and ask her to come by and talk about it.
请她过来谈谈这件事。
Did you get dressed right away?
你马上穿好衣服吗？
international standards of water treatment are usually followed at bottling plants.
装瓶厂通常遵循国际水处理的标准。