单词	fall into a problem
释义	fall into a problem 开始讨论问题
随便看	recoverable material recoverable matter recoverable mechanism recoverableness recoverable object recoverable oil recoverable oil reserves recoverable oil reserves 矿业 recoverable oil reserves矿业 recoverable operation Recoverable Orbital Launch System recoverable ore recoverable part recoverable photo reconnaissance satellite recoverable pillar recoverable rate recoverable read error recoverable rent recoverable reserve recoverable reserve estimating recoverable reserves recoverable reserves, industrial reserves recoverable reserve, workable reserve recoverable resin bolts recoverable resource