4 sentences

1. 这瓶盖太紧了，得用起子。

   zhè píng​gài tài jǐn le, děi yòng qǐ​zi.

   This bottle cap is too tight; I need a bottle opener.

   Source: Dong Chinese Dictionary

2. 这个瓶盖太紧了，我拧不开。

   zhè​ge píng​gài tài jǐn le, wǒ nǐng bù kāi.

   This bottle cap is too tight; I can't unscrew it.

   Source: Dong Chinese Dictionary

3. 请把瓶盖拧紧。

   qǐng bǎ píng​gài níng​jǐn.

   Please screw the bottle cap on tight.

   Source: Dong Chinese Dictionary

4. 我当时在屁股口袋里装着幸运瓶盖。

   wǒ dāng​shí zài pì​gu kǒu​dài lǐ zhuāng zhe xìng​yùn píng​gài.

   I had my lucky bottle cap in my back pocket.

   Source: OpenSubtitles