But in 2008, the firm found that the 787's carbon-fibre "wingbox", the internal fuselage structure the wings attach to, was not strong enough and needed stiffening with metal spars.

但是在2008年，公司发现内部机身结构与机翼结合处的787的碳素纤维“翼盒”，强度不够并且需要金属翼梁的加固。

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But in 2008, the firm found that the 787's carbon-fibre "wingbox", the internal fuselage structure the wings attach to, was not strong enough and needed stiffening with metal spars.

但是在2008年，公司发现内部机身结构与机翼结合处的787的碳素纤维“翼盒”，强度不够并且需要金属翼梁的加固。

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