He wouldn't say this if it weren't the gospel truth.
如果这不是绝对真理，他就不会这么说。
If it had hit the Earth, it would have made a crater 100 miles across and thrown up an immense cloud of dust.
如果它撞上了地球，就会砸出一个100英里宽的大坑并扬起巨大的尘埃云团。
如果它成功了，那就是成功了。
How can the sleigh land if it doesn't snow?
如果不下雪的话，雪橇要怎么着地？
If it doesn't work, send it back to the maker.
如果不管用，就把它退还给制造厂家。
If it weren't for you, I wouldn't be alive today.
如果不是你，我今天不会还活着。
Sleeping in the nude, if it suits you, is not a bad idea.
如果适合你的话，光着身子睡觉并不是一个坏主意。
What if it rained and then froze all through those months?
如果那几个月一直下雨然后又结冰该怎么办？
The house seemed muted, hushed as if it had been deserted.
这房子悄无声息，好像一直没有人居住。
My boss had a stock response – "If it ain't broke, don't fix it!"
我的老板是老一套的回答–“没坏的话就别修了！”
Now, if it was me, I'd want to do more than just change the locks.
然而，如果是我，我要做的远不只是换换锁。
Test to see if the finish is tacky, and if it is, leave it to harden.
测试一下看看最后一道漆是否还发黏，如果是的话，那就放着让它变硬。
He's decided to get a look at the house and see if it might be worth buying.
他已经决定去看一下那所房子，看看是否值得买。
The earth would be a frozen ball if it were not for the radiant heat of the sun.
要是没有太阳的辐射热，地球将会是一个冰冻的球体。
I only take on work that excites me, even if it means turning down lots of money.
我只承接让我感兴趣的工作，即使这意味着损失很多钱。
Competition can be healthy, but if it is pushed too far it can result in bullying.
竞争可以是良性的，但如果被推向极端，就会导致恃强凌弱。
Be very careful with this stuff, it can be dangerous if it isn't handled properly.
对这东西要小心，处理得不好可能会发生危险。
We don't actually need it on Tuesday, but if it arrives by then, so much the better.
实际上我们星期二并不需要它，但如果那时能到就更好。
Sometimes a bit of selfishness, if it leads to greater self-knowledge, is no bad thing.
有时候一点点的自私，如果能引发更多自知之明，也并非坏事。
I could happily move back into an apartment if it wasn't for the fact that I'd miss my garden.
若不是因为我会惦记着花园，我本可以高兴地搬回公寓。
I would really like living here if it wasn't for the gangs of kids who make our lives a misery.
要不是那一群群的孩子搅得我们生活不宁，我还是挺喜欢住在这里的。
They seem to think that if it isn't happening in their own backyard, it isn't worth worrying about.
他们似乎认为，如果事情不是发生在他们本国的后院，就不值得担心。
He was in his office, battering the keyboard of his computer as if it were an old manual typewriter.
他在办公室重重地敲打着他的计算机键盘，好像在用一部老式的手动打字机。
The committee will need to winnow out the nonsense and produce more practical proposals if it is to achieve results.
若想取得实效，委员会将需要摈除那些没有实际意义的观点，提出更切合实际的建议。
但是如果下雨会怎样？
没人知道会不会下雨。
What if it isn't a real opportunity?
要是它不是一个真的机会呢？
Turn off lights if it is unnecessary.
如果没有必要，请关灯。
If it is valuable, it should be mine.
如果它很值钱，就应该是我的。
If it is valuable, it should be mine.
如果它很值钱，就应该是我的。
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