例句與造句

1. The under - five mortality rate declined impressively , from 61 per 1 , 000 in 1991 to 35 . 9 per 1 , 000 in 2001 , in just 10 years
   從1991年到2001年的短短十年間，五歲以下兒童死亡率由61下降到35 . 9 。
2. It's difficult to find under-five mortality rate in a sentence. 用under-five mortality rate造句挺難的