experience当经验时是不可数名词。
experience：
n.经验;实践;经历;阅历;(一次)经历；
v.经历;经受;遭受;感受;体会；
第三人称单数： experiences复数： experiences现在分词： experiencing过去式： experienced过去分词： experienced
She didn't get paid much but it was all good experience.
她得到的报酬虽然不高，但有极好的体验。
Some hospital patients experience high levels of anxiety.
有些住院病人十分焦虑不安。
The book is based on personal experience.
本书是根据个人经历写成的。
It was her first experience of living alone.
那是她第一次单独生活。
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