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Freckles are simply concentrations of melanin.是什么意思？

Freckles are simply concentrations of melanin.

雀斑不过是高浓度的黑色素.

相关词汇
freckles are simply concentrations of melanin

freckles

n. 雀斑，斑点( freckle的名词复数 )；
例句
...her freckles and unmanageable hair.
她的雀斑和乱糟糟的头发

are

vi. （用于第二人称单复数现在时，第一、三人称复数现在时）是；n. 公亩（等于100平方米）；
例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

simply

adv. 简单地，朴素地，（引出概括或解释）不过，仅仅，简直，<非正>实在；
例句
Many parents simply abdicate all responsibility for their children.
许多父母对孩子简直是完全撒手不管。

concentrations

n. 集中( concentration的名词复数 )，专心，关注，浓度；
例句
The area has one of the world's greatest concentrations of wildlife...
这个地区是世界上野生动物最为密集的区域之一。

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。

melanin

n. 黑色素；
例句
The production of melanin in the skin is stimulated by exposure to the sun...
皮肤暴露在阳光下就很容易生成黑色素。
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
How long have you lived around here?...
你住在这一带有多长时间了？
They are similar to vesicles in shape and usually have an inflammatory areola.
它形状和水疱类似,常有炎性红晕.
The cheaper FNDs fluoresce roughly as well as those produced with an electron beam.
此种廉价FND所发的荧光与用电子束生产的FND所发荧光大致相同.
Right from my very first day I seemed to be in everyone's good books.
自打第一天起，我好像就和每个人都很合得来。
The development of a tourism explication system of forest parks was recommended.
为森林公园的旅游解说系统的发展提出了一些建议.
I listened to the thwack of the metal balls.
我听着金属球相撞的声音。
Check and maintain STD cost of BOM and process in the system.
在系统中检查并维护BOM的标准成本及程序.
But is was not food that Buck and the huskies needed, but rest.
但是巴克和赫斯基狗需要的并不是食物, 而是休息.
He urged the administration and Congress to come up with a credible package to reduce the budget deficit.
他敦促政府和国会出台一整套切实可行的方案，以缩减预算赤字。
Every organized patriarchal religion works overtime to contribute its own brand of misogyny ( Robin Morgan )
每一种有组织的男权信仰都不遗余力地贡献出自身的厌女标记 ( 罗宾摩根 )