If one chord holds twice as long or only half as long, then we have an irregular harmonic change--irregular rate of harmonic change.
如果某一个和弦持续的时间是两倍或者只有一半，那我们就有了不规则的和声改变——和声改变的不规则比率。
If the horizontal line drawn is aligned with a polygon vertex, then only the segments that are below the line are counted.
如果所绘制的水平线与一个多边形顶点对齐，那么只计算位于该线下方的部分。
If he did not do it, then the adventure would be proved to have been only a dream.
如果他不这样做，那么，那次冒险将被证明只是一场梦。
He refused to develop projection technology, reasoning that if he made and sold projectors, then exhibitors would purchase only one machine—a projector—from him instead of several.
他拒绝研发投影技术，理由是：如果他研发并且销售放映机，电影放映者们就只会从他那里买一台机器，而不是几台。
'If only I had known you then,' he said wistfully.
“要是我那时认识你就好了。”他向往地说道。
For example, if there was only one small problem with a character's family, then "family" might not be the theme of the text.
例如，如果一个角色的家庭只有一个小问题，那么“家庭”可能不是文本的主题。
If he had only known then the dreadful things that were to happen to him on account of his disobedience!
要是他能知道，因为不听话将会面临什么可怕的事情，那就好了！
If only I could spin the photo around, then I could get a good look at it and make a sound judgement.
只要我能够旋转照片，我就可以好好观察它然后做出一个合理的结论。
If your only reason for becoming friends with a foreigner is to improve your English, then you will probably find that you don't have a foreign friend for long.
如果你和外国人交朋友的唯一原因是为了提高你的英语水平，那么你可能会发现你交的外国朋友并不长久。
If only you have difficulties with him then you need to examine yourself and your relationship with him.
如果只有你和他相处困难，那你需要好好反省自己以及你们的关系问题。
If you understand something in only one way, then you don't really understand it at all.
如果你只从一个方面来理解事物，那么你并不能真正理解它的全部。
If you then choose only the user option, you see a thumbnail window on user status appears.
如果您只选择用户选项，那么您会看到一个显示用户状态的缩略窗口。
If you measure only financial performance, then you can hope only for improvement in financial performance.
如果你只衡量财务业绩，那么你只可能在财务业绩方面得到提高。
It only matters if youshoot in the dark, and then shoot without flash.
它只有你在暗光下拍摄并且不适用闪光灯时才会重要。
If this is correct, then only 14% of the world's species have yet been identified - and only 9% of those in the oceans.
如果这个数字是准确的，那么到目前为止我们只鉴定了物种总数的14%，而这些被鉴定过的物种中只有9%是海洋物种。
But if you only interview people with accomplishments, then you have a much broader base to work from.
但是，如果你只面试有成就的人，你将会有一个更宽广的平台来开展工作。
If only a small substring is needed, then - because the whole character array is retained - some space is wasted.
但是如果只有一小段字符串被使用，那么—由于整个字符数组仍然被保存—就有一些空间被浪费了。
If Victor escapes, then not only Palmer but also Jack's wife and daughter will remain in jeopardy.
如果维克托逃脱，那么，不只是帕默，杰克的老婆和女儿会继续处于危险之中。
If only a colon is given, then the user's default group is used.
如果只有给出冒号，那么就使用用户的默认组。
Only then can you tell if you're really "connecting."
只有在你那样做了以后，你才能判断自己是否在真正地和别人“联系”。
If they are read-only databases then this would not be an issue.
但是如果这些数据库是只读的，那么这就不成问题。
If only we had all the time in the world, then everything would be fine.
要是全世界所有的时间都在我们手里，那什么都不是问题了。
If only we had all the time in the world, then everything would be fine.
要是全世界所有的时间都在我们手里，那什么都不是问题了。
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