例句：These materials are highly flammable.

这些材料极其易燃。

1.The British government has introduced new security restrictions in the wake of the parcel bomb discovery.

in the wake of尾随,紧跟,仿效

例句：Traders came in the wake of the conquering armies.

商人随着征服的军队而来。

2.The Turkish Kurd militant group, the PKK, has said it had nothing to do with a suicide bomb attack in Istanbul on Sunday, in which 32 people were wounded.

have nothing to do with与…没关系

例句：This has nothing to do with you.

这事与你无关。

3.The group said it was out of the question that any of its fighters could carry out a bombing which would hurt civilians.

out of the question不值得讨论的, 不可能的

例句：We cannot go out in this weather—it is out of the question.

天气这样糟, 我们不能出去, 这是完全不可能的。

Sleep—during this interval is out of the question.

要在这样的间歇里睡觉是不可能的。

1. and clearly that was vital because if these devices had got through the initial security screening, and so without that tip-off, they may well have exploded.

虚拟语气

与过去事实相反的虚拟：

If had done ..., ... would (might) have done ...