Now they face their biggest challenge.

现在，锂离子电池面临着最大挑战。

youdao

Their biggest challenge was the kitchen, located on the second floor.

最大的挑战是在厨房，在第二层。

youdao

Many officers said their biggest challenge was staying upright on the city's bumpy and sometimes pock-marked roads.

很多警察称，穿着冰鞋在该市崎岖不平、有时还坑坑洼洼的路面上站稳是他们面临的最大挑战。

youdao

Heading home for vacation, their biggest challenge will be crafting resolutions for 2008 that will keep them in power in 2009.

FORBES: Magazine Article

Meanwhile executives at nearly a hundred multinationals recently told my firm that their biggest challenge for growth is recruiting and retaining talent.

FORBES

For Big Easy Blends, who created their line of Cordina ready-to-go frozen drinks in eco-friendly pouches, their biggest challenge eventually became their biggest advantage.

FORBES: For Beverage Entrepreneurs With A Drinking Problem, Advice From New Orleans