You can borrow it, but only once you have done your project on Australia.

你可以借到它，但必须在你完成关于澳大利亚的项目后。

youdao

Sometimes there were negotiations about the rules, but only once did the guy present to me a prepared list of rules of his own.

有时我们也会就规则进行谈判，但只有一个人向我提出了他自己准备好的原则清单。

youdao

Now, if you run the form, you'll still see the alert box, but only once, because the new value is allowable according to the schema.

这时再运行表单，我们仍然会看到警示框，不过它只会出现一次，因为根据模式新值是允许输入的。

youdao

The big cats once roamed throughout Asia, into Siberia, but conservationists say only a few thousand tigers remain in the wild;

VOA: standard.2010.02.22

There we go. Now if I do this, an infinite number of times, we should get roughly 50/50, but now we have the ability to do things only once in awhile.

开始，如果我们，不停地按这个按钮，我们大致会有一半的机会听到猫叫，但是我们每次只有一次按按钮的机会。

哈佛公开课 - 计算机科学课程节选

But once having been cultivated and educated, people will see, not only see the difference between higher and lower pleasures, but will actually prefer the higher to the lower.

但他同时认为，人一旦接受教育和培养，就应该不仅能区分高级和低级快乐，而且会真的更偏好高级快乐。

耶鲁公开课 - 公正课程节选

Pitcher CC Sabathia is an established star, but only once every five days.

FORBES: No Jeter? YES Problem: Yankees Cable Ratings Sink

Eventually we expect to see churn and ARPU benefits, but only once smartphone penetration levels off or replacement cycles elongate.

FORBES: AT&T: Adding Insult To Injury, J.P. Morgan Downgrades

Instead, three commercial banks do that, but only once they have handed the exact amount of American dollars to the authority.

ECONOMIST: South-East Asia��s currencies are not safe yet