If a new process is adopted which proves no better, or not so good as those before in use, the labour expended in perfecting the invention and in carrying it into practice, though employed for a productive purpose, is wasted.

• 如果所采用 的一种新生产方法并不比以前的方法好，甚至还不如以前的方法好，那么花费在完成和 应用这个发明上的劳动，虽说是用于生产目的，却也被浪费了。