The man in the middle is the heaviest.中间的那个人最重。
The man in the middle is heavier than the other two.中间的那个人比另外两个重。
The woman on the left is smarter than the man on the right.左边的女人比右边的男人聪明。
The man isn't as smart as the woman is.男人不如女人聪明。
The woman is standing under a bridge.那位妇女正站在桥下。
The bridge is above the woman.桥在那个女人的上方。
There is a bridge over the river.河上有一座桥。
The river is flowing beneath the bridge.河水从桥下流过。
The water is flowing over a waterfall.水流过瀑布。
The waterfall is very high and beautiful.瀑布很高，很漂亮。
People need passports to travel internationally.人们需要护照才能进行国际旅行。
Without a passport, you cannot leave your country or enter another country.
没有护照，你不能离开你的国家或进入另一个国家。
You need a driver's license to driver a car.你需要驾照才能开车。
It is against the law to drive without a driver's license.没有驾照开车是违法的。
Many people use credit cards to buy things on credit.许多人用信用卡赊购东西。
When you have a credit card, you don't need to carry cash.当你有信用卡时，你不需要携带现金。
Smart phones are very useful and can do many things.智能手机非常有用，可以做很多事情。
You can use them to make phone calls, play games or go shopping on the Internet.
你可以用它们打电话，玩游戏或在网上购物。
We need to buy tickets in order to take a train or watch a sports event.
我们需要买票才能坐火车或看体育比赛。
You can often buy tickets online, and somethings you can get a discount.
你可以经常在网上买到票，有些东西你可以打折。
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