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in intent有意
2.The cardinal had been invited by the Pope to join the party of thirty or so senior Vatican officials accompanying him this week on a state visit.
or so大约
例句：We stayed for an hour or so.
我们停留了一小时左右。
3.Part of the drill had broken off when it hit an obstruction.
break off(使)分离; (使)脱离
例句：The wing of the plane broke off in midair and the plane crashed.
机翼在空中脱落, 致使飞机坠毁。
He broke off the twig with a snap.
他啪地一声把那根树枝折断了。
4.Then the engineers will haul the drill up to the surface and start digging again to widen the shaft until it’s big enough to serve as an escape route.
serve as充当, 担任
例句：The general had served as a soldier in the earlier war.
在早期的战争中, 这位将军曾当过士兵。
We found that birch bark could serve as paper.
我们发现桦树皮可以作纸用。
