4 sentences

1. 医护人员在抗击疫情的第一线。

   yī​hù rén​yuán zài kàng​jī yì​qíng de dì​yī​xiàn.

   Medical staff are on the front lines of fighting the epidemic.

   Source: Dong Chinese Dictionary

2. 全国上下正众志成城地抗击疫情。

   quán guó shàng​xià zhèng zhòng​zhì​chéng​chéng de kàng​jī yì​qíng.

   The whole country is united in fighting the pandemic.

   Source: Dong Chinese Dictionary

3. 医生们始终奋战在抗击疫情的第一线。

   yī​shēng men shǐ​zhōng fèn​zhàn zài kàng​jī yì​qíng de dì​yī​xiàn.

   Doctors have always been fighting on the front lines against the pandemic.

   Source: Dong Chinese Dictionary

4. 战士们在边疆英勇抗击侵略者。

   zhàn​shì men zài biān​jiāng yīng​yǒng kàng​jī qīn​lüè​zhě.

   Soldiers bravely fought off invaders on the border.

   Source: Dong Chinese Dictionary