He suspected that the US would take the opportunity to strike back at the Axis forces.他怀疑美国将利用这次机会对轴心国部队进行反击。I should be foolish if I did not take the opportunity which was being offered to me.如果不抓住这个送上门的机会，我就是愚蠢透顶。If you have to take the floorboards up, take the opportunity to lag any pipes at the same time.如果一定要把地板掀开，不妨趁此机会给各个管道加一层隔热保护。