语文书 / 例句 /

光子没有质量——它们是无重的。用英语怎么说？

光子没有质量——它们是无重的。

Photons have no mass—they are weightless.

相关词汇
have no are weightless

have

aux. 用以构成完成式及完成式的不定式，表示已经…；vt. 有，具有，拿，取得，从事，必须，不得不；n. 〈口〉有产者，有钱人，富国，〈英俚〉欺骗，诈骗；

no

adv. 不，否，一点也没有；adj. 没有的，不许的，一点儿也没有，决不是的；n. 不，否定，否认，反对票，否决票；abbr. 数字(number)，元素锘(nobelium)的符号；

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）；

weightless

--
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
He professed to be content with the arrangement...
他对这个安排表示满意。
No one carrying arms is allowed within the precincts of a temple.
携带武器者不得进入神殿的界域。
Unfortunately I'm not suitably dressed for gardening.
不幸的是，我的着装不适合做园艺活。
TV is a bad influence on people.
电视会对人们产生不良影响。
...sleek black hair...
乌黑闪亮的头发
She was widowed in 1967...
1967年她成了寡妇。
If Mr Denny is indeed the villain of the piece, as the police claim he is, he should have been more carefully watched.
如果丹尼先生真像警察说的那样是犯罪元凶，就应该对其进行更加严密的监视。
I stood there dumbfounded.
我站在那儿目瞪口呆。
Throughout his school life Darius was tactless and egocentric...
上学期间，达赖厄斯粗鲁冒失，而且总以自我为中心。
She's a victim of the dreaded hay fever...
她患上了花粉热这种讨厌的病症。
...nagging headaches.
顽固的头痛
The riverbed was strewn with big boulders.
河床上散布着很多大圆石。
...respiratory and pulmonary disease.
呼吸系统和肺部疾病
This campaign is one of the most successful in the history of advertising.
这一宣传推广是广告史上最为成功的活动之一。