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alkalis

/ˈælkəlaɪz/ /ˈælkəlɪz/

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 :

"Example Sentence: "When making soap at home, it's crucial to handle the strong alkalis like lye with extreme caution because they can burn the skin." "
在家自制肥皂时，务必极其小心地处理像氢氧化钠（烧碱）这样的强碱性物质，因为它们会灼伤皮肤。
chemistry substance material compound science
noun

碱, 碱性物质。

(Western United States) Soluble mineral matter, other than common salt, contained in soils of natural waters.

Examples :

"The farmer worried about the alkalis in the soil, which could damage his crops if they became too concentrated by irrigation. "
这位农夫担心土壤里的碱性物质，如果灌溉导致这些物质浓度过高，就会损害他的庄稼。
geology chemistry environment substance mineral agriculture

Related Words

Illustration sentence

sentence noun

[ˈsɛntn̩t͡s]

判决，宣判

"The court returned a sentence of guilt in the first charge, but innocence in the second."

法庭对第一项指控宣判有罪，但对第二项指控宣判无罪。

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 concentrated

concentrated verb

/ˈkɒnsəntɹeɪtɪd/ /ˈkɑnsəntɹeɪtɪd/

集中，聚集。

"to concentrate rays of light into a focus"

把光线集中到一个焦点上。

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 irrigation

irrigation noun

/ˌɪɹəˈɡeɪʃən/

灌溉，浇灌。

"The farmer used irrigation to water his crops, ensuring a good harvest. "

农民用灌溉的方法给庄稼浇水，确保获得丰收。

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 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。