同義詞
1. the tough outer part of a loaf of bread
2. a hardened layer, coating, or deposit on the surface of something soft
- covering
- , layer
- , coating
- , cover
- , coat
- , sheet
- , thickness
- , film
- , skin
- , topping
- , caking
- , encrustation
- , scab
- , concretion
3. a living or livelihood