常见例句雙語例句On the weekend, they mixed sawdust and newspapers with polymers and cement in an unsuccessful attempt to seal a crack in a concrete pit at reactor No 2.周末的時候，他們嘗試著將木屑和報紙與水泥混郃堵住第二核電站的泄露小洞，但失敗了。 返回 sawdust concrete