He started running to catch the bus when he saw it slowing down to make a stop.
Examples (Wiktionary)
Mandarin
奔三
奔三
bèn sān
to push toward 30s; to be in one's late 20s
Mandarin
你从她手中夺下一块钱,如同捧着宝贝似的直奔空地,正好轮到阿海坐庄,你钻进人堆,把一块钱掼在地下,大家都笑了起来。
你从她手中夺下一块钱,如同捧着宝贝似的直奔空地,正好轮到阿海坐庄,你钻进人堆,把一块钱掼在地下,大家都笑了起来。
From : 28 August 1991 , kuo cheng 郭箏 , Gods di ce 上帝的骰子 , chi na Times 中國時報