a discount of 5 percent(5%的折扣);
Eg. purchased 7 yards of carpet(买7码地毯);
Eg. ordered 2 pounds of minced steak
(订购2磅剁碎的肉)。
如果触及的数目和单位是不定数,可用单词表示。
Eg. about five miles per hour(每小时大约5英里)
Eg. at least ten yards away(至少有10码远)
Eg. hesitated for a moment or two(犹豫了片刻)
Eg. I have warned you a hundred times(我已经警告你多少遍了)。
四. 在科技文章中,数字频繁出现,用阿拉伯数字比用单词陈述更有利。
Eg. The new engine has a capacity of 4.3 litres and a power out-put of 153 kilowatts at 4400 revolutions per minute.
这台新发动机的容积为4.3升,转速为每分钟4400转时输出功率是153千瓦。
Eg. We know that the weight of a cubic foot of air at 0oC and 76cm,pressure is 0.08l pound, or 12 cubic feet of air weigh a pound.
我们明白,1立方英尺的空气在0摄氏度和760毫米汞柱压力下,重量是0.81磅,也就是说12立方英尺空气的重量是1磅。
五. 句首不用阿拉伯数字,句末要尽量避免用阿拉伯数字。
Eg. 4th July is an important date in American history.
应当写成The fourth of July.
Eg. 19 couples took part in the ballroom dancing competition.
19对选手参加了交际舞比赛。
应改写成:Nineteen couples took.
Eg. 60%profit was a reported.
据报道有60%的利润。
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