Nifext
可溶游离氮
🗣️ 情景例句
You were four or five years old, I think.
当时你才四、五岁 我想。
Lava flowed out of the crater.
喷火口流出了熔岩。
Then he said something and I understood it.
接着，他说了点什么，这回我听懂了。