几个英语问题疑惑点1.Ladies and gentlemen,please remain [ seated ]（sea

几个英语问题疑惑点
1.
Ladies and gentlemen,please remain [ seated ]（seat）until the plane has come to a complete stop.
Ladies and gentlemen,please remain [ sitting ]（sit）until the plane has come to a complete stop.
两句用法不同的原因是什么,怎样区别?
2.
翻译句子：
（1）You'd better add up your coins,and see how long you can last.
（2）Words become filled with meaning for us by experience; and the longer we tire,the more certain words bring back to us the happy and sad events of our past.