8 sentences

1. 村里的人正在合力淘井。

   cūn lǐ de rén zhèng​zài hé​lì táo jǐng.

   The villagers are working together to clean out the well.

   Source: Dong Chinese Dictionary

2. 他们合力把桌子抬到了二楼。

   tā​men hé​lì bǎ zhuō​zi tái dào le èr lóu.

   They worked together to carry the table to the second floor.

   Source: Dong Chinese Dictionary

3. 入侵者被当地居民合力逐出。

   rù​qīn zhě bèi dāng​dì jū​mín hé​lì zhú​chū.

   The intruders were driven out by the combined efforts of the local residents.

   Source: Dong Chinese Dictionary

4. 工人们合力抬起那口重重的木棺。

   gōng​rén men hé​lì tái​qǐ nà kǒu zhòng​zhòng de mù guān.

   The workers worked together to lift the heavy wooden coffin.

   Source: Dong Chinese Dictionary

5. 这些大箱子需要几个人合力才能搬运。

   zhè​xiē dà xiāng​zi xū​yào jǐ gè rén hé​lì cái néng bān​yùn.

   These large boxes require several people to move them together.

   Source: Dong Chinese Dictionary

6. 大家合力把这台沉重的机器搬进了车间。

   dà​jiā hé​lì bǎ zhè tái chén​zhòng de jī​qì bān jìn le chē​jiān.

   Everyone worked together to move the heavy machine into the workshop.

   Source: Dong Chinese Dictionary

7. 几名壮汉合力才挪开了路中间的那块巨石。

   jǐ míng zhuàng​hàn hé​lì cái nuó​kāi le lù zhōng​jiān de nà kuài jù​shí.

   It took several strong men working together to move the giant rock from the middle of the road.

   Source: Dong Chinese Dictionary

8. 如果物体受到的合力为零，它将保持静止状态。

   rú​guǒ wù​tǐ shòu​dào de hé​lì wéi líng, tā jiāng bǎo​chí jìng​zhǐ zhuàng​tài.

   If the resultant force on an object is zero, it will remain at rest.

   Source: Dong Chinese Dictionary