They said that sometimes when they tried to ask their sexual partners to use protection, they might experience verbal of gression aggression or violence.

她们表示，有时当他们想尽力说服伴侣采取安全措施，可能得到的却言语的力行为。

Cross check in cross-borehole shows that root-mean-square error of predicted porosity of simple cokriging is less than 10% compared with that of linear re-gression method.

井间交互检验证明,简单协克里格法预测孔隙度的均方根误差比线性回归法小10％以上。