Between 1987 and 1990, Steffi Graf largely held off Navratilova's challenge for the crown.

1987到1990年期间，施特菲•格拉芙很大程度上抵挡住了纳芙拉蒂洛娃的夺冠挑战。

《柯林斯英汉双解大词典》

The greatest challenge for the Americans is understanding the mindset of Eastern Europeans.

对美国人来说，最大的挑战在于理解东欧人的思维方式。

《柯林斯英汉双解大词典》

Sampras beat Carl-Uwe Steeb by 6-1, 6-2, 6-1 to underline the legitimacy of his challenge for the title.

桑普拉斯以6比1、6比2和6比1战胜了卡尔-尤韦·斯蒂布，证明了他挑战冠军头衔的合理性。

《柯林斯英汉双解大词典》

"This has clearly been a systemic challenge for financial stability in the euro area.

VOA: special.2010.05.14

Realize that there's an inevitably challenge for us and actually helping people in this kind of context, especially as the deadline really approaches.

这对我们来说是一个不可避免的挑战,需要在这种环境下帮助人们，特别是当最后期限要接近了。

哈佛公开课 - 计算机科学课程节选

And it was a challenge for a while, but I enjoy learning different languages.

当时那还真是个挑战，但我喜欢学习不同的语言。

第二外语，英语 - SpeakingMax英语口语达人

The challenge for investors is deciding which asset classes to use in a portfolio.

FORBES: How to Pick Asset Classes

Another big challenge for Western multinationals is that their Chinese rivals are catching up fast.

ECONOMIST: Consumer goods

The greatest and most subtle challenge for a place like Lichfield is the preservation of niceness.

ECONOMIST: Why the old are moving inland