ahead of one's competitors or peers in the same sphere of activity
领先
use someone's own methods to outdo them in their chosen activity
以其人之道还治其人之身
the deception or crime is revealed or foiled
（诡计或罪行）被戳穿，被挫败
a signal for play to begin in a game or match
比赛开始信号
(informal, chiefly N. Amer.)said when a situation is regarded as hopeless or irreversible
(非正式， 主北美)没有希望的，无法挽回的
spying
间谍活动
the rivalry between Britain and Russia in central Asia during the 19th century
大博弈（19世纪英俄两国在中亚地区的较量）
(archaic)mock; taunt
(古)嘲笑；奚落
playing badly (or well)
竞技状态不佳（或佳）
(Brit. informal)working as a prostitute
(英，非正式)卖淫
(informal)the best or most important of its kind; the only thing worth concerning oneself with
(非正式)最好的；最重要的；最值得关心的
advance another's plans, whether intentionally or not
（有意无意地）为别人帮忙
to what extent are they playing the government's game?.
他们支持政府会支持到什么程度？。
behave in a fair or honourable way; abide by the rules or conventions
办事公道，讲信誉；按章办事
deal with someone or something in a way that lacks due seriousness or respect
闹着玩，不认真对待
Don't play games with me.
别跟我插科打诨的！。
(informal)what's going on?
(非正式)发生了什么事？
what are you up to?.
你在干什么？。