不分上下的比赛

neck-to-neck contest  detail>>

不分上下

make no distinction of rank; not to know one's place  detail>>

并驾齐驱，不分上下

neck and neck  detail>>

齐头并进；不分上下

neck and neck  detail>>

难分上下的赛跑。

near race  detail>>

小李和小王那真是不分上下

in the skills of driving xiao li and xiao wang are neck and neck  detail>>

积分上下限

range of integration  detail>>

难分上下

hard to tell which is better  detail>>