The mason was chipping away at the rock with a hammer. 石匠用鎚子一點一點地把那塊石頭擊碎。
He was chipping away at the rock with a hammer. 他用鎚子一點一點地擊碎那塊石頭。
"We're chipping away at a very dominant competitor where market share means a lot, " said Peter Higgins, a Microsoft product manager in charge of Excel. 微軟公司(Microsoft)一位主管Excel的產品經理希金斯說："我們正逐漸地削弱一個首要的競爭者。在這一行業里市場佔有率頗為重要。"
