only if

基本解釋

Only if we let it.
如果我們讓它這么做的話。
Only if they have learned to value the freedom free software gives them, to value freedom in and of itself rather than the technical and practical convenience of specific free software.
只有當他們認識到了自由軟件給予用戶自由的價值，承認自由和他們本身的價值，而不是某個自由軟件技術上或實用性上的便利。
Whenever you hear the word If, then, and, or, not, If and only if, all these logical words, all, is, lovely logical words, you've got to be sensitized this week because I want to hear you.
不管什么時候你聽到了如果，那么，和，或者，不，如果和只有當，這些邏輯詞的時候，所有，是，很可愛的邏輯詞，你這周要很敏感，因為我想聽到你們。

It used to be that players in professional sports could change teams only if they were traded, sold or released.
It's as if the commodity of the bride is deemed truly valuable only if it can be guaranteed pure and untouched.
這就好像新娘這件商品,只有在完全的純凈沒有動過才是有真正價值的。
耶魯公開課 - 彌爾頓課程節(jié)選
The "parable of the vineyard" assures us that God rewards us regardless of our hard work and investment, but only if we're called, only if God chooses us.
葡萄園的寓言“使我們確信,無論我們是否努力工作都會得到上帝的獎勵，但除非上帝選擇了我們。
耶魯公開課 - 彌爾頓課程節(jié)選

But only if it's accompanied by increased enforcement of immigration laws and tougher, broader enforcement.
FORBES: Magazine Article