美国人最重要的生日是十八岁生日。

The most important birthday in the US is the eighteenth.

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这是我十八岁生日收到的第一个礼物。

This is the first present that I got for my 18th birthday.

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当年我十八岁生日时，我要的礼物是辆汽车。

When I made 18 my birthday gift was a car.

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他有七分之一的机会在七十八岁生日前患上肺癌。

He has a 1-in-7 chance of getting lung cancer by his 78th birthday.

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果然，十八岁生日的几天后，他文了身，回到家里。

Sure enough, a few days after his 18th birthday, he come home with a tattoo.

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用英语翻译：哥，十八岁生日快乐愿你每天开开心心快快乐乐！

Columbia, eighteen-year-old Happy Birthday wish you a happy happy day!

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用英语翻译：哥，十八岁生日快乐、祝你健健康康、快快乐乐、开开心心、每一天、祝你永远快乐幸福每一天！

Columbia, eighteen-year-old Happy Birthday wish you a happy happy day! I wish you happiness forever!

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今天是我的生日，我就要正式地步人十八岁了。

Today was my birthday. I was officially eighteen years old.

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今天是我朋友的十八岁的生日，她请我们出去喝酒。

Today, it was my friend's 18th birthday. She had invited us out drinking.

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今天是我朋友的十八岁的生日，她请我们出去喝酒。

Today, it was my friend's 18th birthday. She had invited us out drinking.

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