As geologists, we examine layers of sediment on the Earth' s surface to approximate the dates of past geologic time periods.
作为地质学家，我们研究地球表面的沉积层以估算过去地质时期的年代。
If you haven't found the hedge trimmer yet, forget it. It s almost time now to lose the leaf rake.
如果你还没找到修剪篱笆的工具，把它忘了吧，是时候把草耙给丢了。
Since the early 1990s, several clinics have been established in the U. S. to treat heavy Internet users.
1990年代初以来，美国已建立了一些诊所来治疗重度依赖互联网的用户。
The U. S. envoy was recalled to Washington.
该美国特使被召回了华盛顿。
The plural 's' is not a free form, as it must always be attached to a noun.
表示复数的s不是自由语素，必须附着于名词。
We decided that we needed to change our target market from the over-45's to the 35-45's.
我们决定有必要把目标市场从45岁以上人群调整为35–45 岁之间的人群。
It's really only the hard core that bother(s) to go to meetings.
也只有那些骨干分子愿意去开会。
Emigration to the West reached a peak in the 1830's.
向西部迁移的行为在19世纪30年代达到顶峰。
Revenue from snuff, sold under brands from Sweden's General to Timber Wolf in the U. S., gained 20 percent to 953 million kronor.
来自鼻烟的收入，从瑞典的将军品牌到美国的大灰狼品牌所出售的，增长了20%，达到了9.53亿克朗。
The Russian soup s very nice. I can't wait to drink it.
俄罗斯的汤很好，我都等不及要喝了。
Since we've moved to this new shop, the expenses have increased greatly, because it' s a much bigger shop.
自从我们搬到这家新店以后，费用大大增加了，因为它是个比之前大得多的店。
They want to prove that inside fat does harm to the body' s communication systems.
他们想证明内部脂肪对身体的传输系统是有害的。
I had a hankering to see 1949's White Heat, the Jimmy Cagney flick where he plays gangster Cody Jarrett.
我很想看1949年的《白热》，那是一部吉米·卡格尼主演的电影，他在其中饰演黑帮老大科迪·贾勒特。
Element 43's radioactivity makes it easy to isolate and measure.
43号元素的放射性使其易于分离和测量。
In the early 1970's, the Soviet Union began to give firms and industries some of the flexibility in adjusting prices that a more informal evolution has accorded the capitalist system.
20世纪70年代初，苏联开始在价格调整上给予企业和工业一些与资本主义制度一致的灵活性，这是一种更为非正式的演变。
In the 860's the Byzantine Empire began to recover from Arab incursions so that by 872 the military balance with the Abbasid Caliphate had been permanently altered in the empire's favor.
860年代，拜占庭帝国开始从阿拉伯人的入侵中恢复，因此到872年，与阿拔斯王朝的军事平衡永久地成为帝国的优势。
"The most important about this discovery is TU-103's ability to produce butanol directly from cellulose," said Mullin.
“关于这个发现最重要的是TU-103从纤维素直接生产丁醇的能力。”穆林说。
One can always manage to do more things, no matter how full sb.'s schedule is in life.
一个人总是可以做更多的事，不管他生活中的日程安排有多满。
Because current federal law already forbids the use of federal funds to create embryos for research or to knowingly endanger an embryo 's life, NBAC will remain silent on embryo research.
因为现今的联邦法律已经禁止使用联邦基金克隆胚胎用于研究或者有意地威胁胚胎的生命，NBAC在胚胎研究上将保持沉默。
Find out the fastest way to an anteater 's stomach!
找出最快的方法抓住食蚁兽的胃!
On the New Year' s Day, we Chinese always visit relatives and give gifts to each other.
在新年那天，我们中国人总是拜访亲戚，互赠礼物。
She thinks it is very important to protect people s privacy.
她认为保护人们的隐私非常重要。
Google owes much of its success to the brilliance of S. Brin and L. Page, but also to a series of fortunate events.
谷歌的成功在很大程度上归功于 S. Brin和L.Page 的才华，但同时也是一连串幸运事件的结果。
Beginning mainly with the recession in the early 1970's, this paradigm began to unravel.
主要从20世纪70年代初的经济衰退开始，这种模式开始瓦解。
The first two of these symbols were unknown, but Champollion knew that the repeated hieroglyphs to the far-right symbolized an "S" sound.
头两个符号是未知的，但商博良知道，在最右边重复出现的象形文字代表“S”的声音。
First came the steamboat; although flatboats and keelboats continued to be important until the 1850's steamboats eventually superseded all other craft in the carrying of passengers and freight.
首先是蒸汽船，虽然1850年时蒸汽船最终取代了所有用来运载乘客和货物的船只，随后平底船和龙骨船仍然相当重要。
One of these urges had to do with creating a state of peace in the midst of turbulence, a "still point of the turning world," to borrow a phrase from T. S. Eliot.
这些诉求之一与在动荡中创造一种平和的状态相关，借用 T。S。 Eliot 的话来说，就是“旋转世界中的静止点”。
Part of Chang'e 4's mission (使命) is to see how a moon base could be built for humans, including exploring (探索) whether humans could grow food and other plant products there.
嫦娥4号的部分使命就是探测怎样为人类建一个月球基地，包括探索人类是否能在上面种植食物和其他植物。
As the match began, I was alarmed to see that the other team was wrestling without headgear, a kind of light helmet designed to protect a wrestler"s ears.
比赛开始时，我吃惊地发现对方选手在摔跤时没有戴头盔，那是一种轻型的头盔，用来保护摔跤选手的耳朵。
Capt. Arzt 's reported to local newspapers that his findings were inconclusive.
阿尔茨特上尉向当地报纸报告说，他的发现是非定论的。
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