They have taught the Turks numerous inventions, artifices, and machines of war.他们把众多发明创造、巧妙装置和战争机器传授给了土耳其人。The battle to stay ahead of the competition means that constant invention is vital.要在竞争中保持领先，意味着必须不断进行发明创造。Inventions typically involve minor improvements in technology.发明创造往往包括技术上的小改进。