4 sentences

1. 他已经通过了初级技工的考核。

   tā yǐ​jīng tōng​guò le chū​jí jì​gōng de kǎo​hé.

   He has passed the assessment for a junior technician.

   Source: Dong Chinese Dictionary

2. 那个老技工修机器确实有两手。

   nà​ge lǎo jì​gōng xiū jī​qì què​shí yǒu liǎng​shǒu.

   That old mechanic really knows a trick or two about fixing machines.

   Source: Dong Chinese Dictionary

3. 这家工厂雇佣了许多熟练技工。

   zhè jiā gōng​chǎng gù​yōng le xǔ​duō shú​liàn jì​gōng.

   This factory employs many skilled workers.

   Source: Dong Chinese Dictionary

4. 技工利用超声波技术来检测金属管道的裂缝。

   jì​gōng lì​yòng chāo​shēng​bō jì​shù lái jiǎn​cè jīn​shǔ guǎn​dào de liè​fèng.

   The technician used ultrasonic technology to detect cracks in the metal pipes.

   Source: Dong Chinese Dictionary