couldn't
contr. 不能（同 could not）
例句
I couldn't stand that yowling.
我无法忍受那种哀嚎。
《柯林斯英汉双解大词典》
She couldn't digest food properly.
她无法正常消化食物。
Some of them couldn't eat a thing. One couldn't even drink.
他们中有些人一点东西都不能吃，有一人甚至连水都不能喝。
