2 sentences

1. 销售团队正在积极跟进这些潜在的客户。

   xiāo​shòu tuán​duì zhèng​zài jī​jí gēn​jìn zhè​xiē qián​zài de kè​hù.

   The sales team is actively following up on these potential customers.

   Source: Dong Chinese Dictionary

2. 由于体力不支，他渐渐无法跟进前面的运动员。

   yóu​yú tǐ​lì bù​zhī, tā jiàn​jiàn wú​fǎ gēn​jìn qián​miàn de yùn​dòng​yuán.

   Due to physical exhaustion, he gradually failed to keep up with the athletes ahead.

   Source: Dong Chinese Dictionary