同根派生 grind away相關詞英漢例句The steps have been ground away by the passing feet of many visitors over the centuries.這些臺階經過許多世紀眾多游客的足踏，已經磨損。Grinding for a test; grinding away at housework.為考試埋頭苦讀; 埋頭做家務grind away更多例句