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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。
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。
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。
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
‘I won’t do it!’ she informed him bluntly.
“我才不干呢！”她直截了当地告诉他。
One of the reasons influencing CFB safe operations return valve clinkering blockage.
回料阀结焦堵塞是影响循环流化床锅炉安全运行的原因之一.
Don't play hanky - panky with me.
别想隐瞒我.
Anita Loos was in many respects untypical of the screenwriting trade.
在许多方面，安妮塔·卢斯看着都不像是从事剧本创作这一行的。
She always exaggerates when she tells something she's done.
每当她谈及自己所做的事时, 她总是言过其实。
The newspaper reporters allege that the man was murdered but they have given no proof.
新闻记者们宣称这个男人是被谋杀的,但他们没提出证据.
...a couple who went for a late-night swim in their underwear.
深夜穿着内衣去游泳的一对夫妇
Every coin has its two sides.
事情都有两面性。
This formal talk with the manager had done him up.
他和经理的这次正式谈话弄得他十分疲劳。
Joy was weeping too, but as a bystander she kept her wits about her.
小福子也落着泪, 可是处在帮忙的地位,她到底心里还清楚一点.