We had to cross a frozen river in the middle of winter to sneak across the border into China.

我们不得不在严冬涉水穿过冰冷的河流，偷偷越过边境潜入中国。

youdao

We had to cross a frozen river in the middle of winter to sneak across the border into China.

我们不得不在严冬涉水穿过冰冷的河流，偷偷越过边境潜入中国。

youdao