语文书 / 例句 /

这些恒星一定是形成于 100 到 150 亿年前。用英语怎么说？

这些恒星一定是形成于 100 到 150 亿年前。

The stars must have formed 10 to 15 billion years ago...

相关词汇
the stars must have formed to billion years ago

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

stars

abbr. specialized training and reassignment students 经过专门训练后再分配的学生，stationary automotive road stimulator (Toyota) 汽车公路固定刺激物（丰田汽车）；n. 星( star的名词复数 )，明星，（尤指旅馆或餐馆的）星级，星象（根据人出生时天体的位置而描述的命运）；
例句
Ptolemy charted more than 1000 stars in 48 constella-tions...
托勒密绘制了48个星座1,000多颗恒星的星位图。

must

aux. 必须，必然要，（做出逻辑推断），（表示坚持）；n. 必须做的事，必不可少的事物，葡萄汁，霉臭，麝香；vt.& vi. （表示必要或很重要）必须，（提出建议）应该，得，（表示很可能或符合逻辑）一定；adj. 不可或缺的，狂暴的；
例句
Some parents believe a boy must learn to stand up and fight like a man.
有些父母认为男孩子必须学会像男子汉一样顶天立地，勇于抗争。

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；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

formed

adj. 成形的，成形加工的；v. 形成，构成，产生( form的过去式和过去分词 )，是，（使）成形，结成（友谊）；
例句
A frown formed between her arched brows.
她皱起两道弯眉。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；
例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

billion

n. 十亿，数以十亿计，大量，一万亿；adj. （法美）十亿的，（英德）万亿的，无数的；
例句
The bank advanced $1.2 billion to help the country with debt repayments.
银行预支12亿美元帮助该国偿还债务。

years

n. 年( year的名词复数 )，年纪，一年的期间，某年级的学生；
例句
His wife was sentenced to seven years imprisonment for aiding and abetting him...
他的妻子作为他的从犯被判入狱7年。

ago

adv. 以前，过去的，之前；
例句
He was killed a few days ago in a skiing accident...
几天前他在一场滑雪事故中丧生。
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 tan-coloured dog looks suspiciously like an American pit bull terrier...
这只棕黄色的狗看上去非常像美国比特犬。
Sixteen of the youngsters set off for help, but during the descent three collapsed in the cold and rain.
16 名年轻人出发去寻求帮助，但在下山过程中有 3 人因寒冷和大雨晕倒了。
'Are you all right?' — 'I'm fine.' — 'Good. So am I.'...
“你还好吗？”——“我挺好。”——“那就好。我也还不错。”
...unilateral disarmament.
单边裁军
Rachel would have known Julia Stone anywhere.
甭管到哪儿，雷切尔都会认出朱莉娅·斯通。
...a slight man with auburn hair and a freckled face.
一头红褐色头发、脸上长有雀斑的瘦小男子
He turned off the television, put on his coat and walked out.
他关掉电视，穿上外套，出门了。
Social activities might include barbecues on the beach and walking tours of the Old Town.
社交活动可以包括沙滩上的烧烤和老城区的步行游览。
She will design a fantastic new kitchen for you — and all within your budget...
她将为你设计一个超级棒的新厨房，而且绝不会超出你的预算。
A UN spokesman said that the mission will carry 20 tons of relief supplies.
联合国的一名男发言人说，该代表团将携带 20 吨救济物资。