Downshifts in that range were sometimes abrupt, though the shifts were smooth in general.

在该转速区域降档的时候稍有顿挫感，但总体换档非常顺畅。

The brakes scrub off plenty of speed and the transmission executes perfect, rev-matched downshifts.

刹车能够有效的减速，并且变速箱也配合的非常完美。

In the worst case, some 8-speed chain rings have shown a tendency for "chain jamming" during downshifts with a 9 speed chain.

最糟的是，某些8速的齿盘在搭配9速链条进行减档变速时会有“跳链”的倾向。