以经济问题为基础的紧张关系，往往是婚姻破裂的关键因素。
Tensions grounded in financial problems often play a key role in ending a marriage.
此法以平面弹性力学的两个问题为基础，而此两问题的解是已知的。
The method is based on two problems of the plane elastic theory.
目的：研究以问题为基础的教学法（PBL）在手术室教学中的应用效果。
Objective:To study the application of PBL in operating room teaching.
目的探讨以问题为基础学习(PBL)教学方法在肿瘤内科学临床教学中的应用。
Objective To investigate the application of PBL method in clinical medical oncology teaching.
目的探讨以问题为基础学习(PBL)教学方法在肿瘤内科学临床教学中的应用。
Objective To investigate the application of PBL method in clinical medical oncology teaching.
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