英语词汇“to keep an ear to the ground”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典-复社网

单词	to keep an ear to the ground
释义	to keep an ear to the ground vi.意思就是保持高度警觉; 及早发现那些即将会发生的事情的预兆; 大约一百五十年前; 美国一些开荒的人逐步地到西部的荒野去开拓。这些拓荒者从当地印第安人那里学到了一个诀窍
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