It has been said that stress causes cancer.

据说压力会诱发癌症。

《柯林斯英汉双解大词典》

It is an arm and a hand too, so that it has been said that the elephant carries his nose in his hand, and it might also have been said that he breathes by his hand.

它也是一只手臂和一只手，所以有人说大象的鼻子长在手上，也会有人说大象用手呼吸。

youdao

It has been said of Beethoven that he toppled the rules and freed music from the stifling confines of convention.

据说贝多芬推翻了规则，把音乐从令人窒息的传统束缚中解放了出来。

youdao

It has been said that Napoleon was successful because he knew the field position of every one of his guns.

VOA: special.2009.11.01

Because it has been said that each American soilder cost us one million dollars a year Ambassodor is so much cheaper.

有人说一个美国士兵每年要花费一百万美元,相比之下，大使是如此廉价。

普林斯顿公开课 - 国际座谈会课程节选

I don't know. Does anybody--It has been-- The colleague answered and said that it's not as effective as other methods.

我不是很清楚,有同事回答说,这种方法并不如其他方法有效

耶鲁公开课 - 心理学导论课程节选

Average growth over the past two decades has been 5.3%, it said.

BBC: WTO cuts 2013 trade growth forecast

"It was very tough for me to get here, but it has all been worth it, " said Messi.

BBC: Messi makes the difference

Aidan, one of those who has been helped by the project, said it has been a life changing time.

BBC: Newquay homeless project continues to grow