您要查找的是不是：
- scarce mRNA(rare mRNA) 稀有mRNA
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- It was in the days when motorcars were rare. 那是在汽车还罕见的时代。
- He's in a bad mood, so I'll make myself scarce. 他情绪不好，我得躲著点。
- Good fruit is scarce in winter and costs a lot. 好的水果冬天难得见到，而且价格昂贵。
- Food was scarce throughout the war. 在战争期间食物匮乏。
- A top hat is a rare sight these days. 高顶大礼帽现在已不多见。
- The need to economize scarce energy resources. 节约使用稀有能源的必要性
- I must admit I am very fond of collect rare book. 我得承认我很喜欢海内珍本。
- Food and fuel were scarce in this region. 这地区食物和燃料都很缺乏。
- It's very rare for him to be so late. 他很少迟到。
- scarce mRNA rare mRNA
- Red squirrels are now very rare in Britain. 红色的松鼠在英国已十分罕见了。
- The white-lipped deer are rare in this area. 白唇鹿在这个地区很罕见。
- These rare tigers are protected by special laws. 这些珍贵的老虎受到专门法律的保护。
- This rare bird has become an endangered species. 这种珍禽已成为濒临灭绝的物种。
- A rare smile lit up his stern features. 他那难得一见的微笑在他死板的脸上平添一些生气。
- It is rare to find such a genius nowadays. 这样的天才现在很少见。
- He is which is rare for him, in a bad temper. 他在发脾气，这对他来说是很少见的。
- Now that oil is scarce, the fate of the motor car is uncertain. 既然石油短缺，那么汽车将来会怎样就难以预料了。
