我想把前花园装点得五彩缤纷。
他想赶在太阳升起前翻过那山脊。
He wanted to be over the line of the ridge before the sun had risen.
球员在退场前向球迷致意。
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.
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.
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.
我的祖父母六年前搬到了乡下。
今天早上，我在登机前从机场给她打了电话。
I phoned her from the airport this morning just before I got on board the plane.
不久前，她在网上分享了一些有用的学习技巧。
六年前我们全家搬到美国时，我们谁也不会说英语。
When our family moved to the United States six years ago, none of us spoke any English.
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.
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.
那天晚上海蒂睡觉前还在看她的书，这本书成了她最心爱的宝贝。
Heidi still looked at her book before going to bed that night, and this book became her dearest treasure.
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.
大约5000年前，埃及人和其他近东地区的人开始将图画作为一种书写方式。
About 5,000 years ago the Egyptians and other people in the Near East began to use pictures as a kind of writing.
虽然屈原在几千年前就去世了，但人们每年都纪念他，因为他忠于国家，忠于人民。
Though Qu Yuan died thousands of years ago, he is remembered every year for his loyalty to his country and his people.
一个世纪前，化学家斯万特·阿伦尼乌斯就人类影响地球气候的可能性展开了最早的辩论之一。
A century ago, chemist Svante Arrhenius started one of the first debates over the potential for humans to influence the planet's climate.
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.
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.
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.
昨天我和李明参加了一个野外生存训练。就在黎明前，我们兴高采烈地步行出发了。
Li Ming and I took part in a wilderness survival program yesterday. Just before the dawn, we set out on foot in high spirits.
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.
他认为，远在公元前30,000年以前，猎人可能会用一套刻在骨头和石头上的符号系统来标记月相。
He believes that as far back as 30,000 B.C., hunters may have used a system of notation, engraved on bone and stone, to mark phases of the Moon.
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.
洗手前不要触摸眼睛、鼻子和嘴巴。
Avoid touching your eyes, nose and mouth before washing your hands.
音乐家正坐在钢琴前，准备演奏。
过马路前要左右看看，确保安全。
Look left and right to make sure it's safe before you go across the street.
离开房间前请记得关掉电视。
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