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The chemical composition of the melo shell is calcite and aragonite.是什么意思？

The chemical composition of the melo shell is calcite and aragonite.

美乐贝的化学成分是方解石和文石.

相关词汇
the chemical composition of shell is calcite and aragonite

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

chemical

adj. 化学的，用化学方法制造的，化学作用的；n. 化学药品，化学制品；
例句
The chemical companies had amalgamated into a vast conglomerate...
那些化学品公司已经合并成一个庞大的企业集团。

composition

n. 作文，作曲，创作，构图，布置，妥协，和解；
例句
...the chemical composition of the ocean.
海洋的化学成分

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

shell

n. （贝、卵、坚果等的）壳，外壳，炮弹，（人的）表面性
例句
The long whining whistle of a shell was followed by the dull boom of the explosion...
在炮弹长长的哀鸣声呼啸而过之后是隆隆而低沉的爆炸声。

is

vt.& vi. 是（be的三单形式；n. 存在；
例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

calcite

n. 方解石；
例句
Calcium carbonate occurs in the allomorphs calcite and aragonite.
同质异晶的方解石和文石中含有碳酸钙.

and

conj. 和，与，而且，于是，然后，因此；
例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

aragonite

n. 霰石，文石；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
A comity committee found series serious problems in the current system.
已经有团体发现了现行体系中存在的很多严重问题.
If one sheep leap over the dyke,all the rest will follow.
一只羊跳过沟,其余的羊也跟着跳。
Cats, unlike dogs or even elephants aren't associated with altruistic, empathic behavior.
猫儿不像狗或是大象那样具有利他的, 移情的行为.
He got home from the party the next morning. Needless to say, his parents were furious.
他参加聚会第二天早晨才回家，不用说，他的父母大发雷霆。
She was an amazingly good cook.
她是个厨艺精湛的厨师。
This makes it extremely simple to save what you find with an electronic bookmark so you can return to it later.
如此一来，用电子书签保存所找到的网页内容就变得非常简单，日后也可以再次访问。
The sedimentary members are largely turbidites of greywacke facies.
沉积岩的组成大部分为杂砂岩相的浊积岩.
The superpowers pledged to maintain symmetry in their arms shipments.
超级大国承诺在武器运输方面要保持数量均衡。
Higher taxes may be a necessary evil.
提高税收可能会很不受欢迎，但却是必要的。
He used his headache as a pretext for not going to school.
他借口头疼而不去上学。