Eg. The new engine has a 4.3L capacity and a power output of 153 kilowatts at 4400 revolutions per minute.
这台新发动机的排量为4.3升，转速为每分钟4400转，输出功率是153千瓦。
六、句首不用阿拉伯数字，句末也要尽量避免用阿拉伯数字。
Eg. 4th July is an important date in American history.
应该写成The fourth of July...
Eg. A 60％profit was reported．
应改写成：Sixty per cent profit…
七、遇到分数，可用带连字符号的单词表示。
Eg. At least two-thirds of the class have bad colds.
这个班至少有三分之二的学生患重感冒。
Eg. Nitrogen forms about four-fifths of the atmosphere.
氮约占大气的五分之四。