to keep an ear to the ground

网络释义

1.	保持高度警觉英语中最实... ... 3.to pay through the nose 高价 4.to keep an ear to the ground 保持高度警觉 5.Up to one's ears 深深卷入 ... www.59edu.com
2.	提高警觉美国习惯用语 ... the Christmas rush( 圣诞节前的购物热 ) to keep an ear to the ground( 提高警觉 ) ... www.chenhen.com
3.	指保持高度警觉沪江博... ... 95、poker face 面无表情，不露声色 96、to keep an ear to the ground 指保持高度警觉 97、get up the nerve 鼓起 … blog.hjenglish.com