它使我们能够用它来显示，不仅错误，但也警告。
It allows us to use it to display not only errors but warnings as well.
穆斯塔法说，网络疗法能够起到教育工具的帮助作用，但也警告：“这样你却无法跟一位专家交谈，找出失眠根源。”
Online therapy can be helpful as an educational tool, says Mostafavi, but he cautions, "You don't have the benefit of talking to a professional and finding out what is causing the insomnia."
世界野生动物基金(前身为世界自然基金会)表示对这次峰会的成功率持乐观态度，但也警告其失败将会导致亚洲大片区域的老虎灭绝。
The WWF (formerly the World Wide Fund for Nature) says it is optimistic about the summit's chances of success, but warns that failure will lead to the extinction of the tiger across much of Asia.
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