| 释义 | 
		 rock bottomBrE /ˌrɒk ˈbɒtəm/NAmE /ˌrɑːk ˈbɑːtəm/ noun [U]  (informal) the lowest point or level that is possible 最低点;最低水平◆Prices hit rock bottom.  价格降到了最低点。◆The marriage had reached rock bottom.  婚姻已经走到了尽头。▸ rock-bottom BrE /ˌrɒk ˈbɒtəm/NAmE /ˌrɑːk ˈbɑːtəm/ adjective◆rock-bottom prices 最低价格 |