One obstacle to the enlistment of able professors was that they had to take holy orders.

征聘有才能的教授的障碍是他们必须成为牧师。

This was a time when permanent fellows of a Cambridge college had to be unmarried, celibate and take holy orders.

在这个时代，剑桥大学的终身教授必须保持未婚，独身禁欲并且担任圣职。