1 sentence for 发力 (fā​lì — exert force)

1. 他在比赛的最后阶段突然发力，冲过了终点线。

   tā zài bǐ​sài de zuì​hòu jiē​duàn tū​rán fā​lì, chōng guò le zhōng​diǎn​xiàn.

   He put on a sudden burst of speed in the final stage of the race and crossed the finish line.

   Source: Dong Chinese Dictionary