Refrasil
耐火玻璃布(商品名)
🗣️ 情景例句
Practice tenses as much as possible.
操练各种时态。
Out of sight, out of mind.
久违情疏。眼不见，心不烦？
He found it very difficult to get to sleep and he was rather angry with the man upstairs.
他觉得这样很难入睡， 他对楼上的人相当生气。