她用一个大派对庆祝她的四十岁生日。

She celebrated her forty birthday with a big party.

我打算为她的四十岁生日买一件礼物。

I'm planning to buy a gift for her fortieth birthday.

尼克在他母亲四十岁生日时送给她一条围巾。

Nick gave his mother a scarf on her fortieth birthday.

2010年，朗沃迎来了它的四十岁生日。

In 2010, the company celebrates its 40th anniversary.

这是一只四十岁生日蛋糕，由200人分享。在切开蛋糕之前，客人们曾经问，为什么把行李箱留在了桌上。

It fed 200 people at a 40th birthday party and before it was cut guests asked why luggage had been left on the table

今天是欧阳广业的四十岁生日，可他并没有时间庆祝一场大型的乡村宴会正等待着他。

Ouyang Guangye turns 40 today, but he has no time to hold a party for it, because there's a much bigger one for him to prepare: A country banquet.