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他们对放热的化学反应一无所知.用英语怎么说？

他们对放热的化学反应一无所知.

They know nothing about exothermic chemical reactions.

相关词汇
they know nothing about exothermic chemical reactions

they

pron. 他/她/它们，人们，大家，政府，当局，她们；
例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

know

v. 知道，了解，认识，确信；n. 知情；
例句
I know you're above me socially, but I must say I find your attitude offensive...
我明白你的社会地位比我高，但我得说我觉得你的态度很粗鲁。

nothing

pron. 没有东西，没有事情，无关紧要的东西，毫无趣味的事；n. 无关紧要的人[事]，零，无；adv. 毫不，决不；
例句
I have nothing against foreigners.
我对外国人并无芥蒂。

about

prep. 关于，大约，在…周围；adv. 大约，在附近，在四周，几乎；adj. 在附近的，四处走动的，在起作用的，在流行中的；
例句
The helicopter can zip along at about 150 kilometres an hour.
该直升机能以每小时150公里左右的速度疾进。

exothermic

adj. 发热的，放出热量的；
例句
Is Hell exothermic ( gives off heat ) or endothermic ( absorbs heat )?
地狱是散 发热量 还是吸收热量?

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。

reactions

n. 反应( reaction的名词复数 )，反动，反对，反作用力；
例句
Soya milk can cause allergic reactions in some children.
有些孩子会对豆浆过敏。
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
The army had been placed on a war footing.
部队是按战备状态部署的。
The director will block the day after tomorrow.
导演后天排演。
But in an old man who has known joys and sorrows, and has achieved whatever work it was in him to do, the fear of death is somewhat abject and ignoble.
然而老年人已经经历各种欢乐和忧伤, 而且成就了他力所能及的一切工作,就他来讲, 怕死就有些低贱而卑鄙了.
She frowned at him, only half-jokingly.
她半开玩笑地冲他皱了皱眉。
On the morning before starting the fast, write down your starting weight...
早晨开始禁食前，记下你的体重。
Ingredients : white tuckahoe, aloe , white awn, seawater, alga, evergreen bines, angelica, chamomile, glossy ganoderma, etc.
多种名贵中药,直接针对眼部,增强眼机能的循环动力, 使保持眼睛膨胀的增压液气流贯通, 气助血行,气血相生, 眼睛滋生神采.
How monogamy fares during this epoch, therefore, only occupies him very briefly.
所以, 他只是非常简单地论述了一下一夫一妻制在这一时期的命运.
Please prune plum trees promptly. The plum pickers plucked the plump plums.
请迅速修剪李子树. 摘李子的人摘下饱满了李子.
The profiteers cheated people right and left.
奸商净坑人.
Little Constance had a temperature that day.
小康斯坦丝那天发烧了。