1. | 下呼吸道感染(lower respiratory infection) 0～2岁：上呼吸道感染（URI）6次/年，或下呼吸道感染（LRI）3次/年； 3～6岁：上呼吸道感染7次/年；或下呼吸道感染2次/ … tieba.baidu.com|基于87个网页 |
2. | leaf rolling index ..., the morphology and the leaf rolling index (LRI) of semi-rolled leaf plants were close to that of non-rolled leaf plants. www.lw23.com|基于6个网页 |
