If there's anything you need, just knock on my door.

有什么需要帮忙的话，尽管敲门来找我。

I'm leaving for Beijing on a four-day tour.

我马上要去北京旅游4天。

Window-shopping is some girls'favorite pastime.

逛街是许多女孩消磨时间的首选方式。

While the Chinese rely on chopsticks, westerners prefer to use a knife and fork to eat with.

用餐时，中国人喜欢用筷子，而西方人喜欢用刀叉。

The internet brings people closer from around the world.

因特网把世界上人们的距离拉近了。

I can assure you that as long as you stay at home, you're safe.

我可向你保证，只要你呆在家里就会很安全。