cornerstone
['kɔ:nəstəun]
n. 隅石, 奠基石
例句与用法：
She'll need luck to get out of a tight corner like that.
她要靠运气才能摆脱那样的困境。
By defeating their main competitor this firm has cornered the wheat market.
这家公司击败了主要的竞争对手而垄断了整个小麦市场。
He fell and hit his head on the corner of a box.
他跌倒时，头碰到箱子的一角。
词形变化：
动词过去式: cornered | 动词过去分词: cornered | 动词现在分词: cornering | 动词第三人称单数: corners |
详细释义：
n.
1. 【建】基石; 隅石; 柱石; 地基
2. 【喻】基础; 柱石