Out of the box, the appliance is set to let all traffic pass, leaving the user to specify which types of traffic are blocked (via packet filtering).

盒子之外，设备被设为允许任何流量通过，让用户指定阻塞哪些流量(通过包过滤)。

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But they just pass by, taking the human traffic signal for granted.

但是他们只是驶过，把人体交通标志看作理所当然的事。

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Traffic stops for a train to pass in Hanoi, Vietnam, Jan. 8, 2011.

2011年1月8日，越南河内，交通停止让列车通过。

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During white line demonstrations, protesters stand in the middle of a road but allow traffic to pass.

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It enabled construction traffic to pass safely underneath power cables.

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Road and river traffic will again pass through Yugoslavia, lowering the costs of Bulgarian trade.

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