only if

Testing the value of a check box does not tell you if the user changed the value of the control, only if it is selected.

测试复选框的值并不会告诉您用户是否更改了控件的值，只能告诉您该复选框是否已选中。

Since then, North Korea said it would reconsider disarmament negotiations, but only if it gets to talk to the U. S. first.

自那以来，朝鲜虽然表示将重新考虑去核化谈判，但却表示这要以举行朝、美谈判为前提。

A male cow is usually called a bull only if it still has its reproductive organs. If not, we call it a -- what?

“malecow”通常指那些有生殖器官的公牛，如果被阉过了我们称其为什么呢？

Design-time support can be provided for a custom type only if it has a type converter defined for it.

只能为已定义了类型转换器的自定义类型提供设计时支持。

Only if really does not let me be sad, lets me to like regretting once more, violates mistake.

除非真的不让我难过，让我为爱再次后悔，犯下的错。

Only if it was continuously reformed and developed, it would be perfected gradually.

只有在不断的改革、纳新与发展中才能逐步走向完善。

Fruitful discussion was possible only if Washington checked politics and emotions at the door, said He.

他说，只有华盛顿检讨其政治和情绪，富有成果的谈判才可能实现。

But these investments will flourish only if governments are prepared to put a price on carbon.

但是唯有各国政府准备好碳收费了，这些投资才会繁盛起来。

The application can return 0 only if it has explicitly set the input focus to one of the controls in the dialog box.

只有当应用程序将输入焦点置于对话框内的某一个控件上时，应用程序返回0。

A miscalculation would produce big inflation only if the Fed failed to see and react to it.

只有在美联储没有发现和没有做出反应的情况下，计算错误才能引发严重的通货膨胀。

Take a few seconds to glance through the content, and save a file only if it's relevant to your work activity.

花一点时间浏览一下内容，只有了解到它跟你的工作有关时再保存。

So, this affair is complete of the problems, and marriage is possible only if both of them are very tolerant and intelligent people.

所以，这是所有的问题所在，如果双方都是很宽容和能相互理解的人，天蝎和金牛的婚姻是可能的。

now, it is at a premium to the offering price, which makes it a good deal only if the price of shares jumps a lot once they are issued.

现在，则是有一定的溢价，这使得只有被投资方的股票价格有很大的增长才能够使投资者获利。

The best thing to do is to leave them alone but watch from a distance and call the RSPCA only if you're sure they're in trouble.

这时候能做的最好的事就是不要去打扰他们，最多在远处观察。只在你确认他们遇到麻烦的时候，呼叫RSPCA的电话寻求救援。

She said the site might be OK only if students get permission from their teachers to post exams online.

她认为，只有在学生得到教师允许上传的许可以后，该网站的行为才完全没有问题。

"OK, " I said, laughing, "but only if I can have my own TV series. "

“好吧，”我笑着说，“只要还能看我的电视剧就好。”

SYSCAT. COLDIST contains entries for a certain table only if distribution statistics have been collected for at least one of its columns.

仅在收集了一个表中至少一个列的分布统计信息时，SYSCAT.COLDIST才会包含关于该表的条目。

Only if he works hard will he be able to regain control of the company.

只有努力工作他才能重新获得这个公司的控制权。

The system worked only if the telescope was aimed close to a bright star or planet, limiting astronomers to just 1 percent of the sky.

只有当望远镜对于恒星或行星瞄得足够精准，而天文学家们被限制在了天空中百分之一的范围内的时候，这个系统才能工作。

Only if essential, nobody wants to take the action, but the matter can change very quickly.

除非必要，没有人想采取行动，但是事情会变化得很快。