You can set acknowledgement policy to 2-safe received, 2-safe visible, or 2-safe durable.

可以将确认策略设为2 - safe received、2 - safe visible或2 - safe durable。

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With the 2-safe visible setting, the acknowledgement is sent when the data is visible to applications.

对于2 - safe visible设置，在应用程序可以看到数据时发送确认。

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The visible scope of the water gauge should not surpass the highest and the lowest safe water line.

水位表的可见范围应大于最高、最低安全水位。

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The Bankers Trust building, 1 Liberty Plaza and the Millennium Hotel -- all of which are across the street from the complex and had suffered some visible damage -- are safe and will not be torn down, Sheirer said.

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He added that he wants a system that comes down hard on criminals who choose not to mend their ways, as well as making police more visible and older people to feel safe.

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