Do you want that cake? If not, I'll have it.

你要那块蛋糕吗？不然我就要了。

《牛津词典》

Such measures are desirable, if not essential.

这些措施即使不是必要，也是可取的。

《牛津词典》

If not for John, Brian wouldn't have learned the truth.

要不是约翰，布莱恩不会了解真相。

《柯林斯英汉双解大词典》

African countries frequently have to wait for years, if not decades,for new medical products to trickle into their health systems.

VOA: special.2011.01.19

I think she is a character that you can--if not identify with--at least, you can understand and be interested in.

也至少能够理解和感兴趣的角色，所以，在这本书，还有我们下次。

耶鲁公开课 - 1945年后的美国小说课程节选

But there seems to be as much, if not maybe a bit more work in terms of part-time and short-term jobs.

但是就兼职和短期工而言，工作似乎没变少，可能还更多了。

英国的影视产业 - SpeakingMax英语口语达人

Some of the kitchen-sink allegations against the Marshalls are clearly overblown, if not wrong.

FORBES: The Father, the Son and High Society

But pinning mofongo to a specific place in Puerto Rico is challenging, if not outright impossible.

BBC: On the mofongo trail in Puerto Rico

So, if not the coffee, then what explains the prolificacy of the coffee house?

BBC: Vienna��s recipe for living well