| 单词 | rare | 
| 释义 | rarerare /rɛr/ ●●● W2 adjective 1not seen or found very often, or not happening very often OPP common:  Tim collects rare coins. a rare form of cancerit is rare (for somebody) to do something It is rare for him to ask for help. → see also rarely, rarity2meat that is rare has only been cooked for a short time and is still red:  I like my steak rare.3science, earth science air that is rare has less oxygen than usual because it is in a high place—rareness noun [uncountable]WORD CHOICE: rare, scarce• Rare is used to talk about something that is valuable and that there is not much of, or about things that do not happen very often:  He owns a rare first edition of the poems of John Keats.  A rare tornado struck in Washington state.• Scarce is used to talk about something that is difficult to get at a particular time or in a particular place, although it may be available at other times:  We were poor, and food was scarce.  Jobs for college graduates were scarce. | 
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