您要查找的是不是：
- Busemann-Petty问题Busemann-Petty problem
- 有问题something the matter
- 没问题No problem.
- Busemann进气道Busemann inlet
- Petty投影不等式Petty projection inequality
- Busemann不等式Busemann s inequality
- Lp-Petty投影不等式Lp-Petty projection inequality
- 安全问题safety issue
- 投影不等式的Petty猜想Petty's conjectured projection inequality
- 有问题的iffy
- 大问题great problem
- 提出问题interrogate
- 关键问题sixty-four-dollar question
- 具体问题concrete issue
- 没有问题all serene
- 存在的问题open question
- 常见问题FAQ
- 环境问题environmental problem
- 处理问题handling problem
- 如果可以的话，我想提一个问题。I'd like to ask a question if I may.
