mastered造句
151. Such studies have suggested that the rudiments of mathematics are mastered gradually with effort.
152. Conclusion It is effective of ritodrine in the treatment of premature uterine contractions, and the adaptation syndrome, effective dose and transfusion speed should be mastered strictly.
153. To Robert, a misanthrope who'd barely mastered e-mail in his earlier life, this networked world is a multitasking hell.
154. Now, we have mastered technique of LPG fabrication with ultraviolet light in our lab.
123456