Metamaterial
n. 超材料
🗣️ 情景例句
It's a bargain.
真是大廉售。
Over 5,000 hours of work went into this software, and today it's my privilege to bring it to you.
这种软件的研制超过5000工作小时，今天我很荣辛地向你们展示它。
What day was it yesterday?
昨天是星期几？