The happiest thing during the Spring Festival 过年最开心的一件事 This is the happiest thing for me during the Spring Festival 这就是我过年最开心的一件事 I think it will be unforgettable for me 我想它会使我难忘 be unforgettable for sb. 使某人难忘
翻译如下:The happiest thing during the Spring Festival: This is the happiest thing in my heart during the Spring Festival. I think it will make me remember forever! 其中 sth. will make sb. remember forever ...