2 sentences

1. 探险家小心翼翼地走进了漆黑的洞口。

   tàn​xiǎn​jiā xiǎo​xīn​yì​yì de zǒu​jìn le qī​hēi de dòng​kǒu.

   The explorer carefully entered the pitch-black cave entrance.

   Source: Dong Chinese Dictionary

2. 这条绳子太粗，没法穿过这个细小的洞口。

   zhè tiáo shéng​zi tài cū, méi​fǎ chuān​guò zhè​ge xì​xiǎo de dòng​kǒu.

   The rope is too thick to fit through the tiny hole.

   Source: Dong Chinese Dictionary