跟上

跟上	gēn shàng	to catch up with / to keep pace with
跟	gēn	heel / to follow closely / to go with / (of a woman) to marry sb / with / compared with / to / towards / and (joining two nouns)
上	shǎng	used in 上声
上	shàng	(bound form) up; upper; above; previous / first (of multiple parts) / to climb; to get onto; to go up / to attend (class or university) / (directional complement) up / (noun suffix) on; above