first-order theory的用法和樣例：
例句
- I think, Giddens' structuralization theory can offer the support in this field.
筆者認為，吉登斯的結構化理論可以為這一思路提供了理論的支撐。 - Methods According to the limearized theory and the weakly nonlinear theory, the perturbation method is used.
方法根據線(xiàn)性化理論與弱的非線(xiàn)性理論，運用奇異攝動(dòng)的方法進(jìn)行研究。
