Would you hate it if—if a boy looked at you?
如果——如果一个男孩看着你，你会讨厌吗？
For example, if a student smiles at Bill, he responds by smiling back.
例如，如果一个学生对比尔微笑，他也以微笑回应。
How much wood would a woodchuck chuck if a woodchuck could chuck wood?
如果土拨鼠会扔木头，一只土拨鼠能扔多少木头?
Sprinkler systems must be installed if a company employs more than 25 people.
如果公司雇员超过25人，就要必须安装自动喷水灭火系统。
If a = b and b = c it follows that a = c.
设a =b，b =c，则a = c。
He's a good driver, if a little over-confident.
他是个好司机，虽然有点过于自信。
Children find it difficult if a parent is inconsistent.
如果做父母的不始终如一，孩子会觉得无所适从。
It's an instinctive reaction – if a child falls you pick it up.
这是一种本能的反应–如果小孩摔倒了你会扶他起来。
If a politician transgresses, that is not the fault of the media.
如果一个政客行为失范，那不是媒体的错。
If a computer user fails to log off, the system is accessible to all.
如果一位电脑用户没有登出，所有人都可以进入该系统。
If a tooth feels very loose, your dentist may recommend that it's taken out.
如果有颗牙齿非常松动，你的牙医可能会建议拔掉它。
A tenant may have a right of first refusal if a property is offered for sale.
如果房产要出售，房客可以有优先购买权。
Let's go through the numbers together and see if a workable deal is possible.
让我们一起把这些数字过一遍，看能否找出一个可行的方案。
Only if a teacher has given permission is a student allowed to leave the room.
学生只有得到老师的许可才能离开教室。
The worst-case scenario is an aircraft will crash if a bird destroys an engine.
如果小鸟毁坏了一部发动机，最坏的情形是飞机坠毁。
Users need to find out if a domain name is already registered or is still available.
用户需要查明某个域名是已经被注册过还是仍然可用。
If a spacecraft travels faster than 11 km a second, it escapes the Earth's gravitational pull.
如果一架宇宙飞船飞行超过每秒11公里，它就能摆脱地球引力。
If a tranquilizer is prescribed, be sure your physician informs you of its possible side effects, such as addiction.
如果开了镇静剂，一定要让医生告诉你它可能带来的副作用，例如上瘾。
What if a garden is built in the school?
如果在学校里建一个花园，将会怎么样呢？
If a thin person eats a lot, I'll follow suit.
如果一个瘦的人吃很多，我就会跟着吃很多。
If a car hits you, you should remember the car number.
如果你被车撞了，你应该记住车牌号。
If a woman felt lonely, she expressed her lonely feelings directly.
如果一个女人感到孤独，她会直接表达她的孤独。
If a small thing goes into your eye, don't rub it.
如果一个小东西进了你的眼睛，不要揉它。
If a tornado gets close, what should people do to keep safe?
如果龙卷风要来了，人们应该做些什么来保证安全？
If a person is hit by lightning, you should call for emergency help.
如果有人被闪电击中，你应该呼叫紧急救援。
What should children do if a stranger calls while the parents are out?
父母不在家时，如果陌生人打来电话，孩子应该怎么做？
If a man felt lonely, he used more words to show his fears.
如果一个人感到孤独，他会用更多的语言来表达他的恐惧。
If a student makes a mistake, he can just remove or cut it.
如果学生不小心出了错，他就可以删除或剪切掉错误的地方。
If a person knows opera well, masks and costumes will help know the story.
如果一个人很了解歌剧，面具和戏服将有助于了解这个故事。
If a material goes through a physical change, it is still the same material.
如果一种材料经历了物理变化，它的性质不变。
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