2--The bad taste makes it hard to swallow.
 
1--But does this expression really have to do with medicine？
 
2--Catherine trained the new guy, Eric, to be her assistant.
 
1--That's right. She taught him everything he needs to know about her department.
 
2--And when it came time for a promotion, Eric got a job instead of Catherine？
 
1--Man, that's a bitter pill to swallow.
 
2--The bitter pill, in this idiom, is an unpleasant fact that is difficult to accept or as the saying goes, swallow.
 
1--In this example, Catherine is the one who must swallow a bitter pill.
 
2--She has to accept that she did not get a promotion at work.
 
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注解：
 
1.swallow咽下
2.assistant助手
3.promotion晋升

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译文：
 
1--你以前吃过难吃的药吗？
2--苦味常常令我们难以下咽。
1--但是这个表达真的与药有关吗？
2--凯瑟琳指导新人艾瑞克，让其成为她的助手。
1--就是这样。她教给他需要知道的一切有关部门内的事务。
2--当一次晋升机会来临时，获得晋升的居然是艾瑞克而不是凯瑟琳？
1--这就是难以吞咽的苦果。
2--苦药，在这个习语中，是指一个令人不愉快的事实，难以接受或如同谚语说的那样，难以下咽。
1--在这个例子中，凯瑟琳就是这个必须吞下苦果的人。
2--她也必须接受自己没有获得晋升机会的这个事实。