It’s not firsthand information.那不是第一手资料。I learned the news about her mother's illness firsthand from Lena.我直接从丽娜那里了解到她母亲生病的消息.School trips give children firsthand experience not available in the classroom.学校组织的出游能让孩...

These are all firsts.这些都是一等品.This election had many firsts and many stories that will be told for generations.本届选举,开众多亘古未有之首创,传无数流芳百代之佳话....

first of all的音标：first of all的英式发音音标为：[fə:st ɔv ɔ:l]first of all的美式发音音标为：[fɚst ʌv ɔl]...