single concept的用法和样例：
例句
- Seldom has a single concept played so important a role in mathematics as has the concept of function.
很少有一个概念象函数的概念那样在数学中起如此重要的作用。
single concept的相关资料：
临近单词
single byte
single
single-tube porcelain bushing
single-floor factory building
single--chip microprocessor
single metal floating face seal
single side-band transmission
single-stage centrifugal pump
Single side concave taper wheel
single-phase matrix converter
single-column milling machine
single-phase commutator motor
