concentric tube

his opponent in the second round with a sunday punch.

在第二个回合中，这位冠军用最有力的一击打倒了对手。

Supercavitation technology& a Sunday punch of the future naval battle.

超空泡&未来海战的杀手锏。

Sunday punch means a particularly heavy blow or a powerful punch able to knock someone out

来看英语解释：在比赛中特别狠命的一击，直接把对方K.O.因此，Sunday punch是指最厉害的一击，可以延伸为某人最后的杀手锏。

ci system for brand management-sunday punch of telecom winner in future

品牌竞争情报系统未来电信赢家的杀手锏

The champion knocked down his opponent in the second round with a Sunday punch.

这位前冠军在第十二回合中受到一拳重击而败北了.

some senators feel that if air power is to be the main threat, we are not spending enough on aircraft to give us the "sunday punch" needed.

有些参议员认为，尽管我们的空军力量可对敌人造成主要威胁，但我们却没有在飞机方面投入足够的财力来获取这一所需的“杀手锏”。

The champ knocked out his opponent with a Sunday punch.

那冠军以致命的一击打倒了对手.