油价上涨会产生连锁反应，影响整个运输行业。

The rise in oil prices could lead to ___knock-on effects across the transportation industry.

球员不小心把球打到对手身上反弹向前，导致被判knock-on（持球前进）。

The player accidentally hit the ball onto an opponent and it rebounded forward, resulting in a ___knock-on.