Unisource
单源的
🗣️ 情景例句
What's the difference between A and B?
A和B有什么不同？
I don't think that's at all funny.
我觉得那件事一点也不好笑。
It can take as long as eight days to rig up rope ladders and to establish supply bases before a descent can be made into a very deep cave.
有时需要花费整整8天时间来搭起绳梯，建立供应基地，然后才能到一个很深的洞穴里。