Related topics: Letters & punctuation
R1, r /ɑː $ ɑːr/ noun (plural R’s, r’s) 1. SLA[countableC, uncountableU] the 18th letter of the English alphabet 英语字母表的第十八个字母
2. [singular, uncountableU] American EnglishAmE used to describe a film that has been officially approved as only suitable for people over 17 R级电影〔指经官方审看批准仅适合17岁以上观众观看的电影〕
→ three Rs