1·Mei's comparative studies of Chinese and Western mathematics and astronomy expanded on the earlier work of Xu Guangqi (1562~1633).
梅文鼎对中西数学和天文学的比较研究是以徐光启（1562一1633 ）的著作为基础的。
2·If you go to visit one of my favorite places here in Shanghai in Xuhui, Xu Guangqi Memorial, you can see Matteo Ricci and Xu Guangqi talking about astronomy with Galileo telescope.
如果你参观徐光启纪念馆——那也是我在上海最喜欢的地方——你会看到利玛窦和徐光启拿着伽利略望远镜在探讨天文学。
3·"If these books had been published five years earlier, I might have avoided some problems," said Xu Jun, an HR manager at Guangqi Honda Automobile Company.
“假如该书在5年前出版，我或许就能避免一些(some)错误的发生。”广汽本田汽车有限公司人事经理徐君说。