1. One organization, the South Carolina AIDS Education Network, formed in 1985 to combat the growing number of AIDS cases.
    南卡罗来纳艾滋病教育网络机构成立于1985年，目的在于防止艾滋病病例数量的增加。

2. Later, an officer telephoned for additional details. He said the pair's methods suggested they might be the same men who had committed a number of robberies in the area over the past few months. He asked me to come to the station and look through mug
    后来，一个警察打电话来询问另外一些细节。他说这两个劫匪的作案手法表明他们可能就是过去几个月里这一地区多起抢劫案的肇事者。他让我到警察局去看一下疑犯的照片。

3. In the centre of the hall, there were a number of tall structures which contianed coloured lights .
    在大厅的中央，有一些高大的有彩灯的结构物。

4. In the centre of the hall, there were a number of tall structures which contained coloured lights.
    展厅中央是装有彩色灯泡的许多高高的构件，

5. I happened to be walking in my garden when I noticed a huge number of snails taking a stroll on some of my prize plants.
    我在花园里漫无目的散步，突然注意到许许多多蜗牛在我的一些心爱的花木上慢悠悠的蠕动着。

6. It is: If a year´s number can be divided by 4, it won´t be a leap year if it can be further divided by 100.
    这就是：如果某一年的数字被4除尽后还能被100除，那么这一年就不是闰年。

7. In place of government inactivity, a number of local organizations have emerged.
    鉴于政府行动不力，许多地方组织便应运而生了。

8. It was about midday. I'd left work early in the morning to cash (兑现) a cheque. I walked along to the bank and found there were only about ten or eleven customers in there, a pretty unusual number for those central city banks.
    当时大约是中午时分，为了兑现一张支票，上午我提前下了班。我一路走到银行，发现那儿只有十来个顾客，这个数字对市中心的银行来说是相当不寻常的。

9. In China, where girls are more likely to get encouragement in mathematics, the number of gifted boys exceeds that of gifted girls by four to one, rather than the thirteen to one seen in the United States.
    在中国，人们往往更鼓励女孩学数学，那儿有天赋的男孩与女孩的数量之比为4比1，而不像美国是13比1。

10. For weeks, he sat at his table every day and spent an hour or two trying a great number of combinations but he arrived at no result.
    一连几个星期，他每天伏案工作，花上一、两个小时尝试着大量的组合，但毫无结果。