肢体语言
The use of body language can be seen in a wide variety of fields. Body languages has seen applications in instructional teaching in areas such as second-language acquisition and also to enhance the teaching of subjects like mathematics. A related use of body language is as a substitution to verbal language to people who lack the ability to use that, be it because of deafness or aphasia. Body language has also been applied in the process of detecting deceit through micro-expressions, both in law enforcement and even in the world of poker. Sometimes, Language Barrier could be such a problem to foreign people. Therefore, body language would be very beneficial to be used in communication.