| 单词 | rubber ring |
| 释义 | > as lemmasrubber ring rubber ring n. (a) a loop of rubber used to secure or seal something; (b) an inflatable ring of rubber or similar material used as a flotation device. ΘΚΠ the world > matter > properties of materials > lightness > [noun] > rising due to lightness > buoyancy > device providing buoyancy lifebuoy1783 float1874 water wing1901 rubber ring1976 1853 Daily National Intelligencer (Washington) 16 July In order to restrain the motion of the upper board on the lower, two vulcanized rubber rings were passed round both.] 1858 N.Y. Dental Jrnl. Dec. 118 The rubber rings ought to be changed often, as they lose their elasticity. 1895 Montgomery Ward Catal. Spring & Summer 537/3 Rubber rings, for Mason fruit jars. 1976 H. Tracy Death in Reserve xix. 146 Free bucket-and-spade, beachballs, rubber rings. 2000 Times 2 Aug. i. 3/1 The rugby international..rescued two sisters who were drifting out to sea in a rubber ring. < as lemmas |
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