couldn't meaning in Chinese
couldn't ＝ could not.
Examples
- I couldn't live quietly in the country .
我在乡间不会安安静静地待着。 - Why couldn't it be made to turn wheels ?
为什么不能使它推动轮子呢？ - The steak was so tough that he couldn't eat it .
那牛排硬得他没法吃。 - He couldn't see the difference between good and bad .
他不分善恶。 - I couldn't touch a drop indeed, sir .
我实在一滴也不能入口，先生。