litmus

英 ['lɪtməs]

英英释义考试真题实用场景例句

n. [试剂] 石蕊

中文词源

litmus 石蕊

来自古诺斯语litmosi,用地衣中提取的染色颜料，来自lit，颜色，染料，来自PIE*wel,看，词源同vultus(拉丁语，面容，容貌),moss,苔藓，地衣。后该词用于指石蕊，因石蕊来自地衣植物中提取的蓝色色素。

英文词源

litmus: litmus: see moss
litmus (n.): "blue dye-stuff obtained from certain lichens," early 14c., from Middle Dutch lijkmoes (Dutch lakmoes), from lac (see lac) + moes "pulp." Another theory is that it represents Old Norse litmose, literally "lichen for dying," from Old Norse lita "to dye, to stain," from litr "color, dye" (see lit (n.1)) + mos "moss." Yet another idea connects the first element to Middle Dutch leken "to drip, leak" (see leak (v.)).

Whichever was the original word, it probably was influenced by the others. The dye is obtained from certain lichens. It is naturally blue but turns red in acid and is restored to blue by alkalis. Figurative use of litmus test is first attested 1957, from scientific use of litmus-treated paper as a chemical indicator. Litmus paper with this meaning is from 1803.

双语例句

1. The success of wind power represents a litmus test for renewable energy.: 风能作为动力的成功是对可再生能源一次立见分晓的检验。

2. The outcome will be seen as a litmus test of government concern for conservation issues.: 这结果将被视为检验政府是否关注自然资源保护问题的试金石。

3. Ending the fighting must be the absolute priority, the litmus test of the agreements' validity.: 停火绝对是第一要务，也是检验协议是否有效的试金石。

4. Litmus paper can be used as an indicator of the presence of acid in a solution.: 石蕊试纸可用以测试溶液是否含酸.

5. Her litmus test for good breeding is whether you split infinitives.: 她测试别人是否具有良好教养的标准是看对方是否在不定式的动词前加修饰副词.

英英释意

1. a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator

实用场景例句

litmus paper: 石蕊试纸

Her litmus test for good breeding is whether you split infinitives.: 她测试别人是否具有良好教养的标准是看对方是否在不定式的动词前加修饰副词.

Neutral reaction by litmus indicating paper.: 石蕊试纸呈中性反应.

And isnt that the litmus test?: 从这一点来看,我们的离婚是不是还算成功?

Your records a litmus test of your seriousness a trader.: 交易记录是你严肃交易生涯的测试.

The attitude to protection is a litmus test of economic philosophy.: 对待贸易保护的态度是经济哲学的试金石.

Test: turns blue litmus paper red.: 做个试验吧,能把蓝色的石蕊试纸变成红色.

Financial crisis, the U.S. dollar as the world currency status to a litmus test.: 金融危机之下, 美元作为世界第一货币的地位面临考验.

Here's the litmus test: Sex.: 这里的试金石: 性.

Success and fame are often the litmus test of one's character.: 成功和名誉往往是对一个人的人格考验.

It can change the color of the indicator and make litmus and general indicators blue.: 它能改变指示剂的颜色,使石蕊和通用指示剂变蓝.

Litmus paper can be used as an indicator of the presence of acid in a solution.: 石蕊试纸可用以测试溶液是否含酸.

They turn blue litmus paper red.: 他们把蓝色石蕊试纸变红.

Ammonia gas NH 3 is colorless which can turn wet red litmus paper to blue.: 氨气是无色的,它可把湿的红色石蕊试纸变成蓝色.

In general, the litmus test for separating honesty from corruption in official circles is money.: 一般来说, 鉴别官场上廉洁与腐败的试金石是金钱.

A sence of control is the litmus test for success.: 有无控制感是成功的试金石.

We test the liquid for acidity with a strip of litmus paper.: 我们用一条石蕊试纸来试验这液体是不是酸性的.

Indeed, Zimbabwe has become a litmus test of that boast.: 虽然多数非洲国家, 尤其是领导人,都认为暴政已不存在,而这一夸口似乎很难经受津巴布韦的检验.

Besides having a sour test, acids change the colour of litmus from blue to red.: 除了有酸味以外, 酸还能使石蕊由蓝色变成红色.

Litmus: Mixture of coloured organic compounds obtained from several species of lichens.: 石蕊: 从几种地衣类植物中获取的带色有机化合物的混合物.

Examples are litmus and phenolphthalein.: 例如石蕊和酚酞.

Litmus paper turns red on contact with an acid.: 石蕊试纸遇酸度会变红.

Here's the litmus test: Sex. We do it regularly, unpaid, and we love it.: 这儿有一个石蕊测试: 性爱, 我们经常做, 并且没有报酬, 这是因为我们喜欢做.

If this were a litmus test, the majority of CEOs would fail.: 如果做一个实地测验, 大多数的高阶管理层(CEO)都会面临失败.

Here's the litmus test you can use in order to determine if you are one.: 你可以用下面的测试来确定一下你是否是个好男人.

Your records are a litmus test of your seriousness as a trader.: 因为这会是你交易成功的关键因素.做交易记录是很花时间的.

The outcome will be seen as a litmus test of government concern for conservation issues.: 这结果将被视为检验政府是否关注自然资源保护问题的试金石。

Ending the fighting must be the absolute priority, the litmus test of the agreements' validity.: 停火绝对是第一要务，也是检验协议是否有效的试金石。

The success of wind power represents a litmus test for renewable energy.: 风能作为动力的成功是对可再生能源一次立见分晓的检验。

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