Russia may bolster his air defences.

俄国方面可能也在为阿萨德提供空防支持。

The Ukrainian military said air defence forces had shot down at least 20 objects.

乌克兰军方称，防空部队击落了至少 20 个目标。

I live in London. I live in a state whose sky is protected by air defence and international alliances.

我住在伦敦。我生活的国家，其天空受到防空和国际联盟的保护。

US air defence officials said two fighter jets have tracked the plane after the pilot stopped responding to the radio.

美国空防官员表示，飞行员停止对无线电波做出反应之后，两架战斗机曾追踪该飞机。

Mr Heisbourg says NATO can no longer assume that suppression of enemy air defences and close air support are American monopolies.

Heisbourg说北约再也不能认为压制敌军防空力量，进行低空作战支持是美军的专利。

They managed to dodge through Russian air defences even though these were strategic air defence bases.

他们设法躲避了俄罗斯的防空系统， 即使这些是战略防空基地。

But somehow Ukraine's air defence forces managed to shoot down six of them, as well as several drones, apparently.

乌克兰的防空部队显然设法击落了其中的六架飞机，以及几架无人机。

Ukraine's leader is pleading for more air defence systems.

乌克兰领导人恳求拥有更多的防空系统。

Ukraine's president Volodymyr Zelenskyy yesterday urged G7 countries to send air defence systems more quickly.

乌克兰总统泽伦斯基昨天敦促七国集团国家更快地派遣防空系统。

They were France, Britain, America (albeit on a very limited scale after the opening onslaught on the regime's air defences), Belgium, Denmark, Norway, Italy and Canada.

法国、英国、美国（尽管在对政府军防空力量初始的猛攻后的行动规模非常小），比利时，丹麦，挪威，意大利和加拿大。

It is safe to say that this was originally designed in the Cold War to fly low and fast so that it wouldn't be detected by Soviet air defences.

我可以非常确定的说，“龙卷风”战机最初是为了在“冷战”中可以低空快速飞行设计的，这样它就不会被前苏联防空装置侦查到。

I think the idea that it was an attempted assassination is a bit far because, A, the Kremlin has got two Pantsir air defence systems around it.

我认为这是一次暗杀未遂的想法有点过分，因为，A，克里姆林宫周围有两个铠甲防空系统。

Air defence has been a pretty critical part of the western effort to provide lethal assistance, but there's probably not going to be enough air defence to go around to protect everything.

防空一直是西方提供致命援助的一个非常关键的部分，但可能没有足够的防空系统来保护一切。

But if you look at it as a three-pronged strategy, one of those prongs is, you know, Ukraine does hope that Russia will reallocate some of its air defence forces to Moscow to better defend the capital.

但如果你将其视为三管齐下的战略，其中之一就是， 你知道，乌克兰确实希望俄罗斯将其部分防空部队重新部署到莫斯科， 以更好地保卫首都。