1. After 15 weeks, "the tai chi group did the best, and reduced the chance of having a fall by 47 percent," Wolf said.
    15周后，"太极组的表现最好，摔跤的可能性减少了47%，" 沃尔夫说。

2. Perhaps it is the desire for solitude or the chance of making an unexpected discovery that lures people down to the depths of the earth.
    寻求独处的愿望或寻求意外发现的机会的欲望吸引人们来到地下深处。

3. Most animals we commonly observe do in fact age as we do, if given the chance to live long enough;
    我们通常看到的大多数动物，即使能让它们活得足够长久的话，也会像我们一样衰老的。

4. Giving her the painful facts concerning her chance to renew herself, I told her I thought the claims of such miracle cures were ridiculous.
    在向她说明岁月无情，要改变现实可能性不大之后，我告诉她我认为这些灵丹妙药所宣传的都很荒谬。

5. Have no chance of transporting us to the nearest other star, four light years away, let alone distances of tens or hundreds of light years.
    但尚不能把我们送到离我们最近、相距4光年的其他星球上去，更不用说几十光年或几百光年远的地方了。

6. "Like it? Well, I don´t see why I shouldn´t like it. Does a boy get a chance to whitewash a fence every day?"
    “喜欢？我不知道我为什么不喜欢干这活。每个男孩子每天都有机会粉刷篱笆栅栏吗？”

7. It is no use offering the manual labourer, tired out with a hard week´s sweat and effort, the chance of playing a game of football or baseball on Saturday afternoon.
    对于流汗出力干了一周苦活的体力劳动者来说，让他们在星期六下午再踢足球或打垒球是不合适的；

8. If you had to have an operation in the 18th century your chance of surviving was very poor.
    在18世纪，如果你非动手术不可，那么你活下来的希望是很渺茫的。

9. For the patient, it was a last chance.
    对病人来讲，这是最后一线希望，