And indeed, nitrates are found in snow around the Tunguska blast.

确实，在通古斯卡爆炸冲击波的范围内的雪中发现硝酸盐的存在。

youdao

I didn't know what the Tunguska incident was. I had to look it up.

我不知道什么是通古斯大爆炸，不得不去网上查了查。

youdao

I didn't know what the Tunguska incident was. I had to look it up.

我不知道什么是通古斯大爆炸，不得不去网上查了查。

youdao