单词 | r |
释义 | r1 of 4noun ˈär plural r's or rs ˈärz often capitalized, often attributive 1 a : the 18th letter of the English alphabet b : a graphic representation of this letter c : a speech counterpart of orthographic r 2 : a graphic device for reproducing the letter r 3 : one designated r especially as the 18th in order or class 4 : something shaped like the letter R r 2 of 4abbreviation (1)1 radius 2 rain 3 range 4 rare 5 real 6 recto 7 red 8 repeat 9 rerun 10 resistance 11 right 12 roentgen 13 rook 14 rough 15 run R 3 of 4abbreviation (2)1 rabbi 2 radial 3 radical —used especially of a monovalent hydrocarbon radical 4 Rankine 5 Reaumur 6 recipe 7 registered trademark —often enclosed in a circle 8 regular 9 Republican 10 river 11 R-value R 4 of 4certification mark —used to certify that a motion picture is of such a nature that admission is restricted to persons over a specified age (such as 17) unless accompanied by a parent or guardian compare g, nc-17, pg, pg-13 |
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