The two men are playing a game of political one-upmanship.

这两个男人在玩一场谁更高人一等的政治游戏。

《柯林斯英汉双解大词典》

there might seem little room left for one-upmanship beyond fitting yet more gold-plated taps and a mini-submarine berth.

不是“预留一个小舱室，为了以后安装更多镀金水龙头和微型潜艇泊位，好胜人一筹”

youdao

Trips back home involved enduring endless one-upmanship talk of assets and their 'big plans' for retirement.

BBC: Irish election: Enda Kenny claims opposition victory

Leviev is also moving beyond the ancient game of one-upmanship--and beyond the dirty business of diamonds.

FORBES: On The Cover/Top Stories

The parliamentary debates, as shaped by Steven Knight, leap from noble declamation to taunting one-upmanship and back again.

NEWYORKER: Free Spirits