By Duality is meant the property of having two levels of structures.
举一反三
- 中国大学MOOC: By is meant the property of having two levels of structures, such that units of the primary level are composed of elements of the secondary level and each of the two levels has its own principles of organization.
- 中国大学MOOC: Byis meant the property of having two levels of structures, such that units of the primary level are composed of elements of the secondary level and each of the two levels has its own principles of organization.
- 中国大学MOOC: The design feature of __________ refers to the property of having two levels of structures, such that units of the primary level are composed of elements of the secondary level.
- Practice sentence structures.(Use following two structures to reform the sentences) 1. By using “have only to” A. If you want to be a good football player, all you have to do is practice hard everyday.
- ______ means that language is a system, which consists of two sets of structures, or two level.