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Cucurbituril is a macrocyclic cavitand compound with two portals.是什么意思？

Cucurbituril is a macrocyclic cavitand compound with two portals.

葫芦脲是一种具有大环空腔、两端开口的葫芦状分子.

相关词汇
is macrocyclic compound with two portals

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。

macrocyclic

adj. 大环的；
例句
Cucurbituril is a macrocyclic cavitand compound with two portals.
葫芦脲是一种具有大环空腔、两端开口的葫芦状分子.

compound

n. 场地，复合物，（筑有围墙的）院子，复合词；
例句
This sticky compound adheres well on this surface.
这种黏性的化合物能牢牢地粘在这个表面上。

with

prep. 和，跟，随着，关于，和…一致；
例句
A waiter entered with a tray...
侍者端着托盘进来了。

two

n. 两个，两个东西，两点钟，一对；adj. 两个的，我
例句
He has been absent from his desk for two weeks...
他已经有两个星期没有坐在办公桌前了。

portals

n. 入口( portal的名词复数 )，桥门，[解剖学]肝门，出孔；
例句
The hallowed portals of academe were slowly and grudgingly opening to women.
大学神圣的大门缓慢又勉强地向女性敞开。
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
He looked affectionately at his niece.
他慈爱地看着他的侄女。
What I try to do in putting these pictures up here is to show how varied children are in solving the problem...
我把这些图片挂在这儿的目的是想展示一下孩子们解决这个问题的方法是多么千差万别。
He was internally disturbed to hear of her illness.
听说她病了,他内心很不安.
Line - type fixed attenuator using all fiber structure, stable and reliable performance.
在线型固定衰减器采用全光纤结构, 性能稳定可靠.
She has rallied her spirits.
她已恢复了精神。
Hollywood seems full of curvaceous blondes; a curvy young woman in a tight dress.
好莱坞似乎充满了曲线动人的金发女郎; 身着紧身衣的体态婀娜的年轻女郎.
Every minute during the hijack seemed like a week.
被劫持过程中，每一分钟都过得如同一周那么漫长。
He's well liked by people in the community...
社区的人都非常喜欢他。
She wore a while T - shirt to show off her suntan.
她穿了一件白色 T 恤以显示其晒黑的肌肤.
...a variety of government programs benefiting children.
有益于儿童的各种政府项目