主要问题在于他们不能区分现实和虚构。
The fundamental problem lies in their inability to distinguish between reality and invention.
对于大豆，主要问题在于争夺土地。
In the case of soya, competition for land is the main concern.
主要问题在于供应商很难实施RFID技术。
A big part of the problem is that it's just too hard for suppliers to implement RFID technology.
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