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。
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。
It is as if a green mist were creeping over it.
仿佛有一层绿雾在上面悄悄的移动着。
He's a good driver, if a little over-confident.
他是个好司机，虽然有点过于自信。
What if a competitor company proposes to do business with them in a "traditional" way?
如果一个竞争对手公司提出和他们用“传统”的方式做生意呢？
So if a customer has to pay $20.00 for her dinner, I like to get about $3.00 for a tip.
所以如果一个客户需要为她的晚餐支付20美元，我会倾向于拿大概3美元小费。
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。
It was as if a giant were pounding the house with his fist.
这就好像一个巨人正用他的拳头重击房子一样。
"It looks as if a big branch had been broken off," said Colin.
“看起来，好像有一根大的树枝折断了。”科林说。
It is not difficult to tell if a dog is angry because it barks.
要知道狗是否生气并不难，因为它会叫。
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。
Thousands of casualties are expected if a 9.0 earthquake were to occur.
一场9级地震预计将造成数千人伤亡。
I need to determine if a number is perfect.
我需要确定某个数字是不是完全数。
I need to determine if a number is a factor.
我需要确定某个数字是不是因子。
But let's see if a computer could also do it.
我们来看看，一台计算机是不是也会这么做。
People were friendly, if a bit stiff and formal.
人们很友好，尽管有些正经和不自然。
How do we know if a decision will be implemented?
我们怎样才能知道某项决定是否被执行？
How do I determine if a fix is installed on my system?
如何确定我的系统上是否安装了某个修复程序？
So, if a clean house is a happy house, where do we start?
那么，如果一间干净的屋子就代表一个幸福的家，我们要从哪里开始？
How can you tell if a school has accreditation or not?
那么，你又如何知道一所学校是不是受到认证了呢？
Only if a match is found TM1 will continue to process.
只有在找到匹配的情况下，TM 1才会继续处理。
Naturally, if a soldier wants to smoke we can't forbid this.
当然了，如果一个士兵想抽烟的话我们不能禁止。
Sometimes it is hard to judge if a string is translatable.
有时候，很难判断一个字符串是否是可翻译的。
This might happen, for example, if a client was misconfigured.
这种问题可能出现，例如，如果一个客户端配置错误。
We have a right to know if a potential partner has herpes.
我们有权知道潜在的伴侣是否患有疱疹。
Goals, if a person is not sure, any wind is not so for him.
一个人若是没有确定航行的目标，任何风向对他都不是顺风。
Goals, if a person is not sure, any wind is not so for him.
一个人若是没有确定航行的目标，任何风向对他都不是顺风。
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