2 sentences

1. 他小心地开启了那个尘封已久的木箱。

   tā xiǎo​xīn de kāi​qǐ le nà gè chén​fēng yǐ jiǔ de mù​xiāng.

   He carefully opened the long-sealed wooden chest.

   Source: Dong Chinese Dictionary

2. 那个尘封已久的秘密，终究还是暴在了阳光下。

   nà gè chén​fēng yǐ jiǔ de mì​mì, zhōng​jiū hái​shi bào zài le yáng​guāng xià.

   That long-buried secret was finally brought to light.

   Source: Dong Chinese Dictionary