In 1973, people dressed like this:

在西元1973年，大家都這麼穿：

Slade ruled the charts

Slade （英國搖滾樂團）攻佔排行榜。

and Newsround was only 1 year old.

而 Newsround 才剛成立1年。

And that's when the UK joined what is now known as the European Union or EU.

英國就是在那時加入現在所熟知的「歐洲聯盟」或所謂的「歐盟」。

It's a club of 28 countries from around Europe who work together.

它是一個跨歐洲28國的合作組織。

This is its symbol. It's got its own parliament, its own anthem,

這是它們的標誌。它們有自己的國會、自己的國歌

and its own money, the euro, used by most of its members, but not the UK.

和自己的貨幣，稱為「歐元」，主要使用於成員國，除了英國。

Countries joined the EU because they think it will help bring Europe closer together.

各國加入歐盟是因為他們認為歐盟可以幫助使歐洲各國關係更密切。

But now British prime minister David Cameron has promised

但現在英國總理 David Cameron 誓言

to hold a vote on whether or not the UK should stay in or leave the EU.

要舉行投票來看英國是該留下或退出歐盟。

Supporters of the EU think the UK is stronger as part of it.

支持歐盟者認為英國留在歐盟會比較強大。

That's because we buy and sell lots of things with European countries.

因為英國和歐洲國家買賣很多商品。

People who want to leave the EU say it forces too many rules on Britain.

想離開歐盟的人說歐盟對英國強行實施了太多規定。

They say leaving will give British people more control over issues like immigration.

他們覺得離開能讓英國人更能掌控移民問題。

It will be up to adults around the UK to decide what's best when they vote this summer.

這個夏天將會由英國人來做最好的決定。