it is said，据说。it says，它说。It says sth，这很能说明问题。It says that，是指某个文书或故事或规定如此说。

it says 和it is said

It says in: 在...上写道，在...上说

It says on: 在...上写道，在...上说

It is said 据说，后接从句，或者用It has been said也是同样的意思，但语气更强烈

It says，它说，后接从句，从句的内容必需是“It”说的（或书面规定的）

it is said例句

It is said that she lived to be over 100.

据说她活了100多岁。

It is said that the plant can be used to treat hepatitis.

据说那种植物可用来治肝炎。

It is said that this medicine can alleviate pain.

据说这种药物能够缓解疼痛。

It is said seaweed is edible.

据说，海藻是可以吃的。

it says例句

It says on the label ‘ Produce of France ’.

标签上写着“法国出产”。

It says a lot for him that he has raised his game to the level required

他将比赛技能提至所要求的水平，这说明他颇有能耐。

Don't stick too precisely to what it says in the book.

不要过分拘泥于书上所说的。

It says the photograph is likely cause distress and offence to the public

上面说这张照片可能引起公众的忧虑和反感。

It says torture and summary execution are common

那上面称酷刑和草草处决很常见。