set down与write down的意思，用法有什么区别？请分点解释，并举一些易懂的例子。

set down
1. (使)放下, (使)坐下2. 制定, 确定3. 降落4. (叫…)下车5. 记下
1.
I'll set you down on the corner of your street.
我在你说的那条街的拐角处停下来让你下车。
2.
The bus stopped to set down an old lady.
公共汽车停下来让一个老太太下车。
3.
Why don't you set your ideas down on paper?
你怎麽不把你的想法写在纸上呢?
4.
I will set down the story as it was told to me.
我要把这听来的故事原原本本地记下来。
5.
Uncle Wang set the plough down in a field.
王伯伯把犁降落在田地里了。

write down
写下来，写出来
Write down your number，please！

set down, 记录下来，You can set down everything you have done this week.
write down, 用文字写出，You can write down what you are going to tell her.