hang somebody out to dry这个短语中的“把某人晾在一旁”，某人需要帮忙，而你却把别人晾在一旁。

【例句】
I hate to hang you out to dry and if I could help you in another way, I would.
我不愿意把你晾在外面，如果我能用另一种方式帮助你，我会的。

Yesterday Rowley went golfing with his dad, so he kind of hung me out to dry.
好友跟父亲打高尔夫去了，留下小屁孩一人孤独无援。