singular point of a function的用法和樣例：
例句
- For smooth motion the hypervelocity point canceling and data-filtering are needed.
纏繞時，為了保證運動的平穩性，需要剔除奇異點，進行平滑處理。 - The results show that, at the points of phase singularities, the Gaussian spectrum is split into two lines, meanwhile the spectral switches occur.
結果表明，在相位奇異點處，高斯型光譜一分為二，出現光譜開關現象。
