航天飞机发射前的倒计时已经开始。
The countdown has begun for the launch of the space shuttle.
他就在终场哨声前的几秒钟内打进了制胜的一球。
He scored the winning goal just seconds before the final whistle.
幸运的是，没有人在几周前的地震中严重受伤。
Fortunately, no one was seriously hurt in the earthquake several weeks ago.
即使有这些变化，今天人们仍然可以理解2200年前的中国文字。
Even with these changes, Chinese writing from 2,200 years ago is still understood today.
菜肴很可口，餐前的娱乐活动非常棒。
Everything was delicious, and the pre-dinner entertainment was superb.
就在数千年前的此地，一群无名无姓的人虔诚地埋葬了他们所深爱的人。
There, many thousands of years ago, a nameless people reverently buried their loved ones.
这具来自4700万年前的珍贵化石是科学家们迄今为止所发现的最为完整的灵长类化石。
The 47-million-year-old prize is the most complete primate fossil ever found.
据新的研究发现，在8300万年前的恐龙时代生活着一种巨大的史前鸟类，这种鸟外形可能颇似一只非常大的鸵鸟。
An enormous prehistoric bird, which might have resembled a very big ostrich, lived alongside dinosaurs around 83 million years ago, according to new research.
世卫组织建议所有婴儿在出生后的前六个月完全用母乳喂养。
WHO recommends that all infants should be fed exclusively with breast milk for the first six months of life.
1773年，在《独立宣言》签署的三年前，她关于宗教和道德等各种主题的诗歌在波士顿出版。
Her poems on various subjects, religious and moral, were printed in Boston in 1773, three years before the signing of the Declaration of Independence.
我们把法国南部和其他地方的洞穴壁画赞誉为杰作，它们的历史可以追溯到大概2万年前。
We hail as masterpieces the cave paintings in southern France and elsewhere, dating back some 20,000 years.
这一次，他的讲话引起了与前一次截然相反的反应：听众站起来长时间热烈鼓掌喝彩。
This time, the lecture caused a reaction that was diametrically opposite to the previous one: the audience rose to its feet in a long and enthusiastic ovation.
研究表明，学龄前儿童具有抽象思维的能力。
The research shows that preschool children are capable of thinking in abstract terms.
与40年前相比，卫生保健的水平得到了极大提高。
Standards in health care have improved enormously compared to 40 years ago.
在购物前要询问商家的退换货政策。
Ask the merchant about their exchange and return policies before making your purchase.
在四岁生日的前一周，杰克宣布他想要一个消防车形状的蛋糕。
A week before his fourth birthday, Jake announced that he wanted a cake in the shape of a fire truck.
2000万年前，爱达荷州不像现在这样干旱。确切地说，它那时温暖潮湿，生长着茂密的原始森林。
Twenty million years ago, Idaho was not the arid place it is now. Rather, it was warm and damp, populated by dense primordial forest.
我的祖父母六年前搬到了乡下。
不久前，她在网上分享了一些有用的学习技巧。
大约100年前，给孩子们零花钱的做法在美国开始流行。
The practice of paying children an allowance became popular in America about 100 years ago.
前几代人说，他们希望自己的孩子能像林肯一样：有原则、善良、有同情心、果断。
Earlier generations said they wanted their children to be like Lincoln: principled, kind, compassionate, resolute.
将近一半的高收入、大学毕业的父母在孩子5岁前就让他们上艺术课；而在低收入、教育程度较低的父母中，这一比例仅为五分之一。
Nearly half of high-earning, college-graduate parents enrolled their children in arts classes before they were 5, compared with one-fifth of low-income, less-educated parents.
前一年，她去了趟墨西哥，买回了手工做的桌布、镶有锡框的镜子以及纸花。
The year before, she visited Mexico and bought back hand-made table cloths, mirrors with frames of tin and paper flowers.
1989年1月，欧洲铁路共同体提出了一项建议，即在2020年前建成一个从瑞典延伸到西西里岛、从葡萄牙延伸到波兰的泛欧高速铁路网。
In January 1989, the Community of European Railways presented their proposal for a high speed pan-European train network extending from Sweden to Sicily, and from Portugal to Poland by the year 2020.
在我们动身前，清晨的薄雾就消散了。
这张老照片使她回想起30年前结婚那天的情景。
The old picture carried her back 30 years to her wedding day.
这张老照片使她回想起30年前结婚那天的情景。
The old picture carried her back 30 years to her wedding day.
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