Alan Hawkins是犹他州普罗沃杨百翰大学家庭生活学的教授。 他说迄今为止有很多关于导致离婚因素的研究，但“实际上没人研究出离婚的整个考虑过程。”
Alan Hawkins, a professor of family life at Brigham Young University in Provo, Utah, says there's a lot of research on factors that predict divorce but "virtually no research on the thinking process."
对于母亲的赡养问题，杨学华东拉西扯一阵后才表示，自己对母亲有赡养的义务，可究竟要怎么尽这个义务他却没有任何的说明。
The mother of a maintenance problem, Yang Xue-beating for a while after that, his mother had an obligation to do this is to how he has no obligation to explain this.
杨兴有，刘国顺，伍仁军，等。不同生育期降低光强对烟草生长发育和品质的影响[J]。生态学杂志，2007，26（7）：1014-1020。
Yang X Y, Liu G S, WU R J, et al. Effects of shading at different growth, development and quality of tobacco[J]. Chinese Journal of Ecology, 2007,26(7):1014-1020.
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