在紧要关头 meaning in English

at a pinch

The tory party always holds together in times of crisis .
保守党在紧要关头总是能团结一致。
On important occasion, however, he knew, as the saying is, how to make his authority felt .
可是在紧要关头他知道怎样，象俗话所说的，放出他的威风。
They arrived in the nick of time to save us
（在紧要关头他们正好赶到来救我们。）
In times of crisis party members should close ranks
在紧要关头,党员应该团结起来
The tory party always holds together in times of crisis
保守党在紧要关头总是能团结一致

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