to track; to trace; to follow up; (HK, Tw) to follow (on social media)

to pursue (a goal etc) stubbornly; to seek after; to woo

to pursue; to be after; to hunt down

to try to find out; to trace; to track down

to chase; to pursue vigorously

to pursue closely

ray tracing (abbr. for 光線追蹤|光线追踪[guang1 xian4 zhui1 zong1])

to pursue relentlessly

to catch up vigorously; to set off in hot pursuit

lit. once said, a team of horses cannot unsay it (idiom); a promise must be kept