GbEng
书信书信,尤指正式信件 A letter, especially a formal one.
在字(词)处理技术中,书信和其它文献的主要部分。 In word processing, the main text of a letter or other document.
"但是到目前为止,公众已经用书信向新闻界对大学生们表示感激。" "But so far, the public has expressed its gratitude to the students in letters to the Press."