| 41. | fundamental studies |
| 基础研究
|
| 42. | mathematics, physics, and other fundamental subjects |
| 数学、物理学和其他基础学科
|
| 43. | return to our fundamental thesis |
| 回到我们的基本论题上
|
| 44. | fundamental thoughts in economics |
| 经济学的基本思想
|
| 45. | fundamental tone |
| （音）基因
|
| 46. | a fundamental trait |
| 基本特征
|
| 47. | the fundamental truth |
| 根本的真理
|
| 48. | the four fundamental operations in arithmetic |
| 算术的基本四则运算
|
| 49. | the fundamental qualities in human nature |
| 人性的根本特征
|
| 50. | be fundamental to a true understanding of the book |
| 对真正理解这本书十分重要
|