There was no positive evidence that any birth defects had arisen as a result of Vitamin A intake.是什么意思？

There was no positive evidence that any birth defects had arisen as a result of Vitamin A intake.

沒有確鑿證據證明，攝取維生素A會導致出生缺陷。

there

adv. 在那里，那里，在那一點上；pron. 表示某物或某人的存在或某事的發生（常用作be, seem或appear的主語）；int. （表示滿足、煩惱）你瞧，好啦，得啦；

例句
If nature abhors a vacuum, journalists abhor a transition, when there is little news to cover.
好比自然界拒絕真空一樣，新聞工作者則厭惡沒有多少新聞可供報道的過渡時期。

was

v. 用來表示某人或某物即主語本身，用來表示某人或某物屬于某一群體或有某種性質（ be的過去式），在，存在，不受干擾；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲傷。

no

adv. 不，否，一點也沒有；adj. 沒有的，不許的，一點兒也沒有，決不是的；n. 不，否定，否認，反對票，否決票；abbr. 數字(number)，元素锘(nobelium)的符號；

例句
...a crime wave that shows no sign of abating.
絲毫沒有減弱跡象的犯罪勢頭

positive

adj. 積極的，確實的，肯定的，[數]正的，[醫]陽性的；n. 正面，正片，[語]原級形容詞，[數]正量；

例句
Pupils should be helped to adopt a positive approach to the environment.
應幫助學生對環境采取積極的態度。

evidence

n. 證詞，證據，跡象，明顯；vt. 使明顯，顯示，表明，證實；

例句
...scientific evidence that did not fully accord with the facts uncovered by the police.
與警方所掌握的情況不完全一致的科學證據

that

det. 那個，那；pron. 那個，那；conj. 多么，如此…以至，用于某些動詞、形容詞和名詞后，引出各種從句；adv. 不那么，那樣；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我們所見的由一位漂亮模特代言的昂貴化妝品

any

adj. 任何的，一點，一些，普通的，任何，隨便哪一個；pron. 任何，無論哪個，若干；adv. 稍微，少許，什么，一些，一點；

例句
The authorities have abandoned any attempt to distribute food...
當局中止了分發食物的嘗試。

birth

n. 出生，分娩，起源，出身；

例句
The adopted child has the right to see his birth certificate.
被收養的孩子有權看自己的出生證明。

defects

n. 缺點( defect的名詞復數 )，（尤指對完善或完備所必需的）欠缺，弱點，污點；

例句
There was no positive evidence that any birth defects had arisen as a result of Vitamin A intake.
沒有確鑿證據證明，攝取維生素A會導致出生缺陷。

had

v. 有（ have的過去式和過去分詞），（親屬關系中）接受，拿，買到；

例句
He claimed that his parents had abandoned him...
他聲稱父母遺棄了他。

arisen

v. 呈現，出現，發生( arise的過去分詞 )，（由…）引起，起身，(arise的過去分詞)；

例句
A vacancy has arisen which I intend to fill.
有一個職位空了出來，我想要補上。

as

adv. 同樣地，一樣地，例如；prep. 作為，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我記得帕蒂是姓史密斯的。

result

n. 結果，（尤指足球比賽的）勝利，[體]比分，成功實現的事；vi. 發生，產生，歸結為，導致，后果，終結，由…而造成[產生]；

例句
Food allergies can result in an enormous variety of different symptoms...
食物過敏會引發很多不同的癥狀。

of

prep. 關于，屬于…的，由…制成；aux. 助動詞 [非標準用語、方言] =have [主用于虛擬語氣]；

例句
He did have a real knowledge of the country...
他對該國的確知之甚多。

vitamin

n. 維生素，維他命；na. “vitamine“的變體；

例句
Since iron destroys vitamin E, these two nutrients should not be taken in conjunction.
鐵會破壞維生素E，所以這兩種營養物質不應該同時攝取。

intake

n. 吸入，進氣，（液體等）進入口，攝入，攝取，納入（數）量；

例句
...a daily caloric intake of from 400 to 1200 calories.
日攝取400至1200卡路里的熱量

...the spiralling vortex airflow that slows the plane.
使飛機減速的螺旋形氣流渦旋

You just go on ahead. I'll come by later...
你只管先往前走。我隨后就來。

He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打兒子的,是恨惡他;疼愛兒子的, 趁早管教.

For further information, please contact 414 3925, extension 2253.
詳情請致電414 3925,轉分機2253。

He sat there while I made the case for his dismissal...
他坐在那兒，聽我陳述解雇他的理由。

Baroness Thatcher's claims seem credible to many.
撒切爾女男爵的主張在很多人看來是可信的。

Nothing to be got without pains but poverty.
一份耕耘，一份收獲。

This decree obliges unions to delay strikes.
該法令迫使工會推遲罷工。

The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索權當有支付義務的第一方不能支付時，可以向商業票據的背書人要求支付的權力。

He liked Max, and sympathized with his ambitions.
他喜歡馬克思，而且認同他的志向。

She thought with dread of the cold winters to come.
她害怕即將來臨的寒冷冬季。

The dramatic World Motor Sports Council meeting in Paris blew the championship wide open as Schumacher was also docked six points...
在巴黎召開的令人矚目的世界汽車運動理事會會議使冠軍歸屬充滿各種可能，因為舒馬赫也被扣了6分。

He has a security clearance that allows him access to classified information...
他獲得了安全許可，可以接觸機密信息。

The cherry blossom came out early in Washington this year.
今年華盛頓的櫻花開得很早。

I'd had no experience of organizing anything of that sort. I think I was largely a dead loss.
籌辦那類活動我毫無經驗。我看我基本是個廢物。

10,000 deaths a year from chronic lung disease are attributable to smoking...
吸煙導致每年有1萬人死于慢性肺病。

I looked at Pop and he had big tears in his eyes...
我看著爸爸，他眼睛里淚光盈盈。

There was something a little severe and forbidding about her face.
她臉上有種嚴肅、冷峻的表情。