Note from Figure 3 that the proto structure defines the transport-specific methods, while the proto_ops structure defines the general socket methods.

注意在图3中，proto结构定义了传输特有的方法，而proto_ops结构则定义了通用的socket方法。

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NOTE 1 Goods and services includes the [value chain/lifecycle] of the activity, product or service, which includes, for example, transport, packaging and end-use/disposal.

注1 材料和服务包括活动， 产品或服务，例如运输， 包装和最终使用/处理的【价值链/生命周期】。

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Side note: UDP port 2873 uses the Datagram Protocol, a communications protocol for the Internet network layer, transport layer, and session layer.

附注： UDP端口2873使用数据报协议，一个通信协议的互联网络层，运输层，会话层。

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Iain Stewart, the Conservative MP for Milton Keynes South and a member of the Transport Select Committee, also sounded a note of caution.

BBC: High speed rail plans condemned as high cost option

But it is essential to note that there has been widespread criticism of the government's handling of transport.

BBC: Analysis: Labour's pledges

Proponents note that the overall cost of the project would be recouped within a few decades, as the volume of tunnel freight transport activity increased, reaching an estimated 3 percent of the world's total physical cargo or 100 million tons annually.

CENTERFORSECURITYPOLICY: The Bering Strait Tunnel Project