jīng guò / cháng qī / kè kǔ / xùn liàn / tā / cái / liàn jiù / le / bǎi bù chuān yáng / de / běn lǐng

经过长期刻苦训练，他才练就了百步穿杨的本领。

Only after long and hard training did he develop the skill of shooting with great precision.