What are the differences of these words? 这些词的区别是什么?
As the question above, I just don't get it what are the differences of (the meaning or the usage) these words.
"需求 VS 要求"
"畅销货 VS 抢手货"
Could anybody help me to explain or give me some example?
Explanation in English or 中文 is okay for me :)
Thanks!