While customized sneakers are available on many athletic shoe Web sites, fashion shoes are harder, although not impossible, to find.

定做运动鞋在很多运动鞋网站上都能找到，但要找到时装鞋则较为困难，尽管不是没有可能。

youdao

Although not impossible to solve, a single integrated solution that takes care of these concerns has many advantages.

尽管这些问题不是无法解决的，但是能够处理这些问题的综合解决方案可以避免许多麻烦。

youdao

Key elements of the security in these runs include the armored truck, which would be difficult, although not impossible to neutralize.

CNN: Diamond heists are forever

This makes playing cards at the same time difficult, although not impossible.

NPR: The Art Of Sandwich-Making

So meetings are hard to come by, although not impossible.

WHITEHOUSE: White House Press Briefing