I'm rather apprehensive of failure.

我很担心失败。

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今天的几个句子还是有关表达担忧的：1.I have serious misgivings about her failure.我担心她会失败。2.His dropout upsets me very much.他的辍学令我非常不安。3.I fear that she may be in difficulty.我担心他有困难。4. I'm extremely nervous fo my plan being turned down.我极其担心我的计划被否定。