I need to write down what everyone says

有必要───be necessary;记下───Write it down

Now, Mr. Willis . I'm sure that won't be necessary.───哦, Willis先生, 我认为没这个必要.

It may be necessary to buy a new one.───也许有必要买个新的了。

It may be necessary to thin the sauce slightly.───可能有必要将酱汁稍稍稀释一下。

As long as they lived, exertions would not be necessary to her.───只要他们活着, 是不需要她吃苦的.

A little gentle prodding may be necessary at this stage.───在这一阶段或有必要稍微督促一下.

Such tilting will be necessary.───这种改变是必需的.

Exposure to nature has been thought to be necessary for brain development in children.───一直认为，接触大自然对儿童的大脑发育是必要的。

If God did not exist, it would be necessary to invent Him. 

It may be necessary to make alternative arrangements.

I don't think that will be necessary.

It may be necessary to thin the sauce slightly.

Irrigation measures will be necessary in areas of erratic rainfall.