1、private

（產(chǎn)業(yè)、服務(wù)）私立的，私有的，私營的，民營的

a joint venture with private industry.

與私營企業(yè)建立的合資企業(yè)

Bupa runs private hospitals in Britain.

保柏在英國開辦私立醫(yī)院。

個(gè)人的；私人的

the law's insistence that private citizens are not permitted to have weapons.

法律堅(jiān)持要求公民個(gè)人不得持有武器

The King was on a private visit to enable him to pray at the tombs of his ancestors.

國王以私人身份出訪，以便能夠祭拜先祖陵墓。

（財(cái)物等）個(gè)人所有的，私有的，私人的

The landowners have had to sell their private aircraft.

這些土地所有者不得不賣掉自己的私人飛機(jī)。

They want more State control over private property.

他們希望加強(qiáng)國家對(duì)私有財(cái)產(chǎn)的控制。

2、necessary

必要的;必需的

I kept the engine running because it might be necessary to leave fast.

我沒讓發(fā)動(dòng)機(jī)熄火，因?yàn)橐苍S需要迅速離開。

We will do whatever is necessary to stop them.

我們要采取一切必要措施去阻止他們。

(結(jié)果或聯(lián)系)必然的，勢必的

Wastage was no doubt a necessary consequence of war.

巨大的損耗無疑是戰(zhàn)爭的必然結(jié)果。

Scientific work is differentiated from art by its necessary connection with the idea of progress.

科學(xué)工作與藝術(shù)的區(qū)別在于它與人類進(jìn)步有著必然聯(lián)系。