2 sentences for 眨眼 (zhǎ​yǎn — instantly)

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. 时间过得真快，眨眼间孩子们都长大了。

   shí​jiān guò de zhēn kuài, zhǎ​yǎn jiān hái​zi men dōu zhǎng​dà le.

   Time flies; the kids grew up in the blink of an eye.

   Source: Dong Chinese Dictionary