这个问题以前也已经谈过，自己好好找找！

是一种对你有利，但是没有人帮你执行的制度。

呵呵，经典回答！！！

The International Transport Workers' Federation (ITF) is an international trade union federation of transport workers' unions. Any independent trade union with members in the transport industry is eligible for membership of the ITF.

Over 550 unions representing more than 4.5 million transport workers in over 130 countries are members of the ITF. It is one of eleven International Trade Secretariats (ITSs) allied with the International Confederation of Free Trade Unions (ICFTU).

The ITF's headquarters is located in London and it has offices in Nairobi, Ouagadougou, Tokyo, New Delhi, Manila, Rio de Janeiro, Washington DC, Georgetown, Cape Canaveral, Moscow and Brussels
这个就是ITF的标准解释，慢慢查字典吧

Objectives

The aims of the ITF are set out in its Constitution which is attached as Annex I. They are:

to promote respect for trade union and human rights worldwide

to work for peace based on social justice and economic progress

to help its affiliated unions defend the interests of their members

to provide research and information services to its affiliates

to provide general assistance to transport workers in difficulty
Although the range of ITF activities is very wide, they can be best summed up under three key headings:

representation

information

practical solidarity
The ITF represents the interests of transport workers' unions in bodies which take decisions affecting jobs, employment conditions or safety in the transport industry, such as the International Labour Organisation (ILO), the International Maritime Organisation (IMO) and the International Civil Aviation Organisation (ICAO).

A major function of the ITF is informing and advising unions about developments in the transport industry in other countries or regions of the world. The ITF also maintains a specialist education department, dedicated to the development of strong and democratic transport unions.

The ITF organises international solidarity when transport unions in one country are in conflict with employers or government and need direct help from unions in other countries.

The kind of solidarity needed can range from protest messages, demonstrations and political pressure, to direct industrial action in the form of strikes, ***s etc. The ITF's worldwide campaign in the maritime industry against the use by shipowners of Flags of Convenience (FOCs) to escape from national laws and national unions is a good example of solidarity.