complex unit的用法和樣例：
例句
- Quaternions were originally invented as an extension to complex numbers.
四元數最早是為了擴展復數應用而產(chǎn)生與發(fā)展起來(lái)的。 - A ternary complex is also considered as the mathematical tool of describing a spatial motion of an object.
此外三元復數還可作為描述物體復雜空間運動(dòng)的數學(xué)工具。
