2 sentences

1. 护士熟练地给注射器装上了新的针头。

   hù​shi shú​liàn de gěi zhù​shè​qì zhuāng​shàng le xīn de zhēn​tóu.

   The nurse skillfully fitted a new needle onto the syringe.

   Source: Dong Chinese Dictionary

2. 护士在给病人打针前仔细检查了注射器。

   hù​shi zài gěi bìng​rén dǎ​zhēn qián zǐ​xì jiǎn​chá le zhù​shè​qì.

   The nurse carefully checked the syringe before giving the patient an injection.

   Source: Dong Chinese Dictionary