How many sign languages are there in the world?

There are more than 300 kinds of sign language in the world.

According to the data of the World Federation of the Deaf, there are about 72 million deaf people in the world. They use more than 300 kinds of sign language. International sign language can be used by deaf people in international conferences and when traveling and socializing. Sign language translation is a complex project, and it takes many turns from receiving information to transmitting it. International sign language translation in this activity is even more difficult. Firstly, the simultaneous interpretation of English or Chinese pronunciation is converted into Chinese sign language by a voice sign language interpreter, and then translated into international sign language by deaf people who know international sign language.

After receiving the relevant requirements from the United Nations, the Shanghai Municipal Commission of Housing and Urban-Rural Development and the Shanghai Disabled Persons' Federation jointly discussed relevant plans and selected translators who are good at international sign language throughout the city. After selecting the candidates, they immediately conducted emergency training and discussion. Considering various factors, even if two groups of four people finally play, two players are set up as substitutes in the selection plan for emergencies.

The vocabulary of Chinese sign language can be divided into the following types:

1, finger language

Sign language gives all Chinese pinyin letters and numbers, and gives corresponding vocabulary in cooperation with other actions. Some sign language words are simply given by finger language, such as "scissors", "return", "negation" and "success", while others are composed of letters, such as "branch" and "administration".

2, one-handed sign language vocabulary

One-handed sign language vocabulary is given by using one hand to cooperate with a certain part of the body, such as shoulders, lips, ears, lower collar, forehead and so on.

3, two-handed sign language vocabulary

In the process of speech, one hand is the dominant hand (usually the right hand) and the other hand is the slave hand. Compared with the master hand, the action of the slave hand is relatively simple and often symmetrical with the master hand. About 6% of the two-handed sign language is static, that is, the starting hand shape and the ending hand shape are the same in the process of speaking, and the position of the hand in space has not changed (such as "door" and "door")