请问glad和happy有什么区别

请问glad和happy有什么区别 glad和happy有什么区别 pleased和happy和glad有什么区别 joyously,joyful,delightful,pleased,cheerful,happy,glad有什么区别? happy、pleasant、glad、merry……有什么区别? be glad 和be happy 的区别 happy,glad和pleased的区别 请问happy和merry有什么区别吗? Happy Birthday和Happy birth有什么区别 delighted,pleased,happy,glad的区别 joyful,cheerful,happy,glad,gay区别? very glad to see you和Nice to meet you!有什么区别?