Nine is usually thought of as a lucky number because it is the product of three times three.
9通常被认为是一个幸运数字，因为它是3乘以3的乘积。
And I am going to say that the area will be the sum of three terms, which are three bases times three heights.
而我们要考虑的面积就是3项之和，就是这3个底边乘以这三个高的积。
He failed his driving test three times.
他考了三次驾驶执照都没通过。
I stalled the car three times during my driving test.
我考驾照时车子熄了三次火。
The Fed has already eased rates three times since late October.
美联储自十月底以来已三次降低利率。
The prisoners subsisted on one mug of the worst quality porridge three times a day.
犯人一天三次靠一杯最差的粥维持生活。
When he condescended to speak, he contradicted himself three or four times in the space of half an hour.
当他屈尊讲话时，半小时内有三四次前后矛盾。
He knocked three times and waited.
他敲了三下门就等着。
Even if you are not prepared to work up a sweat three times a week, any activity is better than none.
即使你不准备1周流3次汗，任何活动总比没有要好。
You've rung me three times today.
今天你打了三次电话给我了。
We've been introduced about three times.
我们已经被介绍过三次了。
As a rough estimate, Nigeria is three times the size of Great Britain.
粗略估计,尼日利亚是大不列颠的三倍大。
It likes eating carrots. It likes jumping. It goes jumping three times a day.
它喜欢吃萝卜，喜欢蹦蹦跳跳的，一天能跳三次。
"I have heard you crying three times," Mary said, "but I did not know who it was."
玛丽说，“我听见你哭了三次，但当时不知道是谁在哭。”
Her appearance on a talk show was broadcast three times transmitting her message to over 14,000,000 people.
她在一个脱口秀节目中的演讲被播出了三次，她的观点因此向1400万人传播。
"Grandmother loves the songs so that I always have to read them over three times," said Heidi.
“奶奶很喜欢这些诗歌，所以我总是要读上三遍以上。”海蒂说。
Durham had garnered three times as many votes as Carey.
德拉姆获得的选票数是凯里的3倍。
The gunman fired three times in rapid succession.
歹徒连开三枪。
Nelson Piquet, three times world champion, was grievously injured.
3度获得世界冠军的纳尔逊·皮盖受了重伤。
I like this jacket better than that one, but it costs almost three times as much.
相比那件，我更喜欢这件夹克衫，但它的价格几乎是那件的三倍。
The United Nations reported that women do nearly three times as much unpaid domestic work as men.
联合国报告称，女性做的无偿家务几乎是男性的三倍。
I think the rent of this beautiful house must be three times as much as the other one.
我觉得这间漂亮房子的房租一定是另一间的三倍。
He's had coughs an' colds that's nearly killed him two or three times.
有两三次，他得了咳嗽和感冒，几乎要了他的命。
Apple sells the iPhone for three times that.
而苹果公司IPHONE的售价是其3倍。
Students will be warned three times.
学生将被提醒三次。
The same thing went on another three times.
同样的事情又发生了三次。
First, remember to read it three times at least.
首先，记得至少读三遍。
Dad, I love you three thousand times.
爸爸，我爱你三千次。
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