zhè / zhǒng / bǎo / wēn / bēi / de / wài / céng / bù / róng / yì / xī / rè / ná / zài / shǒu / lǐ / hěn / ān / quán

这种保温杯的外层不容易吸热，拿在手里很安全。

The outer layer of this thermos does not absorb heat easily, so it is safe to hold.