4 sentences

1. 运动员正在全速向终点冲刺。

   yùn​dòng​yuán zhèng​zài quán​sù xiàng zhōng​diǎn chōng​cì.

   The athlete is sprinting toward the finish line at full speed.

   Source: Dong Chinese Dictionary

2. 运动员在比赛最后时刻奋力冲刺。

   yùn​dòng​yuán zài bǐ​sài zuì​hòu shí​kè fèn​lì chōng​cì.

   The athlete sprinted with all his might in the final moments of the race.

   Source: Dong Chinese Dictionary

3. 运动员在最后一百米开始全力冲刺。

   yùn​dòng​yuán zài zuì​hòu yī​bǎi mǐ kāi​shǐ quán​lì chōng​cì.

   The athlete began to sprint at full speed in the last hundred meters.

   Source: Dong Chinese Dictionary

4. 距离高考只有一个月了，学生们正在进行最后的冲刺。

   jù​lí gāo​kǎo zhǐ yǒu yī gè yuè le, xué​sheng men zhèng​zài jìn​xíng zuì​hòu de chōng​cì.

   With only one month left until the college entrance exam, students are making their final sprint.

   Source: Dong Chinese Dictionary