zhè / jiàn / shì / biǎo / miàn / shàng / hěn / pǔ / tōng / zǐ / xì / yì / xiǎng / què / xì / sī / jí / kǒng

这件事表面上很普通，仔细一想却细思极恐。

This matter seems ordinary on the surface, but it is scary to think about carefully.