拧下车轮螺母，放掉车胎的气，换上备用胎。Remove wheelnuts, let down tyre, put on spare.先松开螺母，然后卸下车轮。First loosen the nuts, then take off the wheel.这个旧螺母咬不住 扣儿.This old nut won't bite [ grip ] ....
They wanted a pretext for subduing the region by force.他们想找借口用武力征服这个地区。They would now find some dubious pretext to restart the war.他们现在会找个蹩脚的借口重新发动战争。The incident was used as a pretext for intervention in the area.这次事件成了...