2 sentences

1. 他眨眼间就消失得无影无踪。

   tā zhǎ​yǎn jiān jiù xiāo​shī de wú​yǐng​wú​zōng.

   He vanished without a trace in the blink of an eye.

   Source: Dong Chinese Dictionary

2. 那个逃犯早已消失得无影无踪。

   nà gè táo​fàn zǎo yǐ xiāo​shī de wú​yǐng​wú​zōng.

   That fugitive has long since vanished without a trace.

   Source: Dong Chinese Dictionary