例句與造句

1. The cumbersome nature of compound unit arithmetic has been recognized for many years  in 1586, the Flemish mathematician Simon Stevin published a small pamphlet called " De Thiende " ( " the tenth " ) in which he declared that the universal introduction of decimal coinage, measures, and weights to be merely a question of time while in the modern era, many conversion programs, such as that embedded in the calculator supplied as a standard part of the Microsoft Windows 7 operating system display compound units in a reduced decimal format rather than using an expanded format ( i . e . " 2.5 ft " is displayed rather than ).
2. It's difficult to find unit arithmetic in a sentence. 用unit arithmetic造句挺難的