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alkali

/ˈæl.kə.laɪ/

Meanings
noun

碱， 碱性物质

One of a class of caustic bases, such as soda, soda ash, caustic soda, potash, ammonia, and lithia, whose distinguishing peculiarities are solubility in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.

Examples :

""The cleaning solution contained a strong alkali, so we had to wear gloves to protect our skin." "
这种清洁剂含有强碱性物质，所以我们必须戴手套来保护皮肤。
chemistry substance compound material science

Related Words

Illustration peculiarities

peculiarities noun

/pɪˌkjuːliˈæɹɪtiz/ /pɪˌkjuliˈɛɹɪtiz/

特殊性，古怪之处。

"The peculiarity of meeting six people on a usually deserted trail only struck me later on."

在一条平时空无一人的小路上遇到六个人，这件事的特殊性我后来才意识到。

Illustration neutralizing

neutralizing verb

/ˈnjuːtrəlaɪzɪŋ/ /ˈnuːtrəlaɪzɪŋ/

中和，抵消，使无效。

"The antidote neutralised the toxin."

解药中和了毒素。

Illustration contained

contained verb

/kənˈteɪnd/

包含，容纳。

"The box contained old photographs. "

这个盒子里装着一些旧照片。

Illustration ammonia

ammonia noun

/əˈmoʊn.jə/

氨，氨气

"The spilled cleaning solution released a strong smell of ammonia. "

洒出来的清洁剂释放出强烈的氨气味。

Illustration caustic

caustic noun

/ˈkɒstɪk/

腐蚀剂，苛性剂

"The caustic spilled on the science lab table quickly ate away at the plastic. "

不小心洒在实验室桌上的腐蚀剂很快就将塑料腐蚀掉了。

Illustration reddened

reddened verb

/ˈrɛdənd/ /ˈrɛdn̩d/

变红，发红

"After being teased, her cheeks reddened with embarrassment. "

被嘲笑之后，她的脸颊羞得发红了。

Illustration distinguishing

distinguishing verb

/dɪˈstɪŋɡwɪʃɪŋ/ /dɪˈstɪŋɡwɪʃɪn/

区分，辨别。

"The bright red stripe is distinguishing that brand of running shoe from all the others. "

那条鲜艳的红色条纹使那款跑鞋与其他所有跑鞋区分开来。

Illustration changing

changing verb

/ˈtʃeɪndʒɪŋ/

改变，变化。

"The tadpole changed into a frog.   Stock prices are constantly changing."

蝌蚪变成了青蛙。股票价格 постоянно在变化。

Illustration vegetable

vegetable noun

/ˈvɛd͡ʒtəbəl/

蔬菜，青菜.

"My mom planted many different vegetables in her garden. "

我妈妈在她的花园里种了好多不同的蔬菜。

Illustration solubility

solubility noun

/ˌsɑljəˈbɪləti/ /ˌsɒljəˈbɪləti/

溶解性，可溶性。

"The solubility of sugar in hot water is much higher than in cold water, so it dissolves faster when the water is warm. "

糖在热水里的溶解性比在冷水里高得多，所以水温较高时糖溶解得更快。

Illustration cleaning

cleaning verb

/ˈkliːnɪŋ/

清洁，打扫。

"Can you clean the windows today?"

你今天能把窗户擦干净吗？

Illustration solution

solution noun

/səˈl(j)uːʃən/

溶液，解。

"The lemonade was a clear solution of lemon juice and water. "

这杯柠檬水是柠檬汁和水混合的清澈溶液。