Viferral
吡啶与三氯甲醛聚合物
🗣️ 情景例句
I don't know what you are driving at.
我不知道你到底想说什么。
What's your favorite song?
你最喜欢的歌曲是什么？
At the end of the road you'll see the hospital. It'll take you about half an hour.
在那条路的尽头你就会看见那所医院。到那儿大约要半个小时。