They were cutting it fine by arriving at the airport 5 minutes before the plane took off.

他们时间算得紧，在飞机起飞前五分钟才到达机场。

youdao

If we don't leave till after lunch we'll be cutting it very fine.

我们要是午饭以后才走，时间就紧得很了。

《牛津词典》

Third, the plane is particularly smooth, no burr, the incision is very fine, no damage to the workpiece, because it is not contact material, will not scratch the cutting object.

第三、切面特别光滑，没有毛刺的产生，切口是很精细的，对工件没有任何伤害，因为它是不接触材质的，不会划伤切割的物体。

youdao

By making efficiency savings in government and selling state-owned assets, Mr Brown said he could meet debt-cutting targets and he said it would be "fine" if certain programmes - relating to what he described as back-office and administrative functions - were cut.

BBC: I'm honest about spending - Brown