In high risk area, we are recommended to wear eye shield plus surgical mask to offer quite a safe protection.

在高危地区，我们建议在戴口罩的同时还要戴眼镜，因为这可以提供更安全的保护。

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The area mask can be set in the agent properties, or thebitmask can be manipulated using a script at runtime.

遮罩类型在网格导航寻路实体组件进行设置，或者在脚本中进行控制。

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Based on the digital mask technique, the distribution of sand area density and the sediment-transport rate in flow field were obtained.

采用图像处理的数字掩码技术，处理图像得到了沙粒在流场中的面密度以及单宽输沙率。

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Militants from Hamas, one of them wearing a black face mask, were in the area as the interview was set up.

BBC: Gilad Shalit release: Shahira Amin defends interview