Halopolymer
卤代聚合物
🗣️ 情景例句
Don't be too sure.
别那么肯定。
Congratulations on your having passed the test.
我恭喜你通过了考试。
The first thing I saw when I entered the art gallery was a notice which said:
走进展厅首先看到的是一张告示，上面写着