1. 稀罕的：rareness 稀薄 | rarer 稀罕的 | rareripe 早熟的
1. rarer的解释
1. Four million Londoners cram onto the city's Underground passenger railway nearly every day, but it is a rarer event for Prince Charles.
2. Consumers are reluctant to use credit cards for small ticket items and in Asia credit card usage over the Internet is rarer still.
3. But defections to the economically isolated North from the affluent South are even rarer, with the last one likely taking place about four years ago.
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4. Jadeite is the rarer of the two jade variations, and the most expensive.
5. As restrictions on travel became more severe and attitudes became polarised, so the normal exchange of journalistic information and ideas became rarer.
6. 911查询·英语单词
6. The lucrative offers to write their memoirs or join company boards available to their counterparts in the developed world are also much rarer.
7. Those who majored in history, culture and archaeology in colleges are even rarer.
8. The rarer and more evolved the organism, the more money it tends to fetch.
9. Long treasured as a rejuvenating tonic, wild ginseng is getting rare and rarer.
10. But scientists say it's rare for a couple to have two sets of twins, end even rarer for them to have such different appearances.