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1·That's why I was on the horns of a dilemma.

这就是为什么我进退两难了。

2·We believe that industry and regulatory communities currently find themselves caught on the horns of a dilemma regarding aseptic processing.

我们相信，现在制药公司和药证机构发现他们对于“无菌工艺”处于进退两难之间。