What is the difference in usage between a plural using (a) the kanji repetition character 々, (b) a plural using -たち, and (c) the singular?
I know that there are some noun that are made plural by the kanji repetition character, such as 人々 and 国々. My question is, how does this differ from using the non-plural form of the noun? And how does ...
I came across the following in a newspaper article: 藤沢健太教授（宇宙物理学）らの研究グループ The first part (藤沢健太教授) is the name of a professor (Professor Kenta Fujisawa). The parentheses say "Astrophysics", and ...