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1·Carbon has a valency of 4.

碳的化合价是4价。《牛津词典》

2·CO is the formula for carbon monoxide.

CO是一氧化碳的分子式。《牛津词典》

3·Organic compounds contain carbon in their molecules.

有机化合物的分子里含碳。《柯林斯英汉双解大词典》

4·Dissolved carbon dioxide makes the water more acidic.

溶解的二氧化碳使水更具酸性。《柯林斯英汉双解大词典》

5·Humans take in oxygen and breathe out carbon dioxide.

人吸入氧气，呼出二氧化碳。《牛津词典》

6·Diamond is the crystalline form of the element carbon.

钻石是碳元素的晶体结构。《柯林斯英汉双解大词典》

7·We all need to look for ways to reduce our carbon footprint.

我们都需要寻找减少我们碳足迹的办法。《柯林斯英汉双解大词典》

8·Burning fossil fuels uses oxygen and produces carbon dioxide.

燃烧化石燃料消耗氧气并产生二氧化碳。《柯林斯英汉双解大词典》

9·Industrialized countries must reduce carbon dioxide emissions.

工业化国家必须减少二氧化碳的排放。《柯林斯英汉双解大词典》

10·The limit for carbon monoxide is 4.5 per cent of the exhaust gas.

尾气中一氧化碳的排放量限制在4.5% 以下。《柯林斯英汉双解大词典》

碳

1·Organic compounds contain carbon in their molecules.

有机化合物的分子里含碳。《柯林斯英汉双解大词典》

2·Diamond is the crystalline form of the element carbon.

钻石是碳元素的晶体结构。《柯林斯英汉双解大词典》

3·We all need to look for ways to reduce our carbon footprint.

我们都需要寻找减少我们碳足迹的办法。《柯林斯英汉双解大词典》

4·You can make your flights carbon neutral by planting trees to make up for the greenhouse gas emissions.

你可以通过种树抵消温室气体排放，这样你的飞行就可以做到碳中和。《柯林斯英汉双解大词典》

5·By investing in efficient plant it could generate lots of valuable carbon credits to sell to wealthier, more wasteful nations.

投资高效工厂能节余很多宝贵的碳信用额度，可以用来卖给那些更富有、更浪费的国家。《柯林斯英汉双解大词典》

碳素

1·It is possible that AAPB release such compounds during their normal metabolism. That would be odd, though, since it would be a waste of valuable carbon.

AAPB有可能在日常代谢时产生了难降解混合物，但这种解释很奇怪，因为这样会浪费一些有价值的碳素。

2·Similar rights could be given to nitrogen polluters, as they have been to carbon polluters in Europe, and to seabed miners on continental shelves.

相似的政策也会对氮素污染者发挥作用，这已经对欧洲的碳素污染者和大陆架上的海底采矿者开始实施。

3·Branson's one-person submersible is made from carbon fiber, titanium, and has a quartz viewing dome.

布兰森的一人潜水器是由碳素纤维、钛制成，并有一个石英观望圆顶。

4·The solution inside the tube was composed of carbon nanoparticles Dr. Curley hoped could be put inside tumors.

试管里的溶液含有科里博士希望能放到肿瘤里去的碳素纳米颗粒。

5·A Green credit mechanism needs to be set up to promote a new mode of financing and create innovative financial carbon products.

需要建立绿色信用机制促进新的金融模式和创造革新的金融碳素制品。

碳元素

1·The discovery that carbon from the ocean floor can be mixed so deep within the mantle raises the larger question of how much of the ocean floor and sediments are carried to the deep mantle.

来自海洋板块中碳元素混杂在如此之深的地幔中这一现象的发现使人们产生更大的疑问，到底有多少海洋板块和沉积物被带到深层地幔中。

2·Moreover, an X-ray analysis of the regions of the feathers containing these bodies showed them to be composed mainly of carbon—as would be expected if they were fossilised melanosomes.

而且，对含有该结构的羽毛区域的X射线分析显示，它们主要由碳元素组成——而如果它们是黑色素体化石，就正和预想的一样。

3·Next to the park is a stretch of peat-swamp forest, mostly degraded but rich in carbon.

紧靠着公园的是一片连绵的泥炭沼泽森林，大部分已经退化，不过富含碳元素。

4·The mantle is the biggest reservoir of carbon, and we know very little about it, Dr. Walter said.

“地幔是碳元素的最大存储地，但我们对其所知甚少，”沃尔特博士说。

5·But trace imprints found in other fossilised feathers (despite an absence of carbon) may indicate the original presence of melanosomes that have since been lost to oxidation.

而其他羽毛化石(尽管缺乏碳元素)中找到的痕迹，也许能显示已经因氧化而消失的黑色素体的原始存在。

复写纸

1·The drawing is transferred onto the wood by means of carbon paper.

图样是通过复写纸摹绘到木头上的。《柯林斯英汉双解大词典》

2·You have this standardized form and you've got carbon paper between them and you typed it — all these really created much more accurate techniques.

你在印有这种标准表格的，纸中间夹上复写纸，接着打印信息-，这些都能使得信息更为准确。

3·LIKE slide-rules,steam engines and carbon paper, the telex machine, once ubiquitous andindispensable, has vanished from sight.

就像计算尺、蒸汽机和复写纸，曾经无处不见的、不可或缺的电传机已经从我们的视野里消失了。

4·You needn't have typed it twice. You could have used a carbon.

你没必要打两遍的，你当时本可以用复写纸打。

5·Carbon paper, postcards, and envelopes are also daily use items made of paper. Even a tea bag is made of paper!

复写纸、明信片和信封也是日常使用的纸制品，甚至连茶包都是纸做的！

碳精

1·Finally, it presented an example of main shaft carbon sealing monitoring and diagnosis and the spectrum feature analysis based on the data measured.

最后给出了主轴碳精密封监测诊断实例和实测数据频谱特征分析。

2·Carbon electrodes, carbon brushes, lamp carbons, battery carbons and other articles of graphite or other carbon, with or without metal, of a kind used for electrical purposes.

碳电极、碳刷、灯碳棒、电池碳棒及电气设备用的其他石墨或碳精制品，不论是否带金属。

(1)carbon dioxide二氧化碳

(1)carbon fiber碳化纤维，碳素纤维

(1)carbon steel[化]碳钢，碳素钢

(1)activated carbonn. [化]活性碳

(1)low carbon低碳的

(1)carbon black炭黑；碳黑