crusts

n.

面包皮( crust的名词复数 )；糕饼等的酥皮；（泥土、雪等）硬的外层；外皮

earth's crust地壳

continental crust大陆地壳

weathering crust风化壳

lower crust下地壳；下部地壳

earth crust地壳

upper crust上流社会

oceanic crust海洋地壳，大洋地壳

soil crust土壤结皮；土结皮；土壤表壳

weathered crust风化壳

crust leather坯革；半硝革

pie crust派皮；大馅饼皮；做馅饼的糊

1. The earth's crust is layered..
   地球的外壳是分层的。
2. The crust on the snow was thick enough for us to walk on it.
   外层的雪已经冻硬，可以在上面行走。
3. Please cut the bread into slices and remove the crust.
   请将面包切片并去除外壳。
4. The crust of the bread is burnt.
   这块面包的外皮烤焦了。

1. The snow crusted the lake last night.
   昨夜的雪使湖面结了冰。

1. The snow may crust at night, due to outward radiation.
   由于外部辐射，晚上雪可能结成雪壳。

Neutron star crusts.
Microbiotic Crusts and Ecosystem Processes
CRYPTOGAMIC CRUSTS OF SEMIARID AND ARID LANDS OF NORTH AMERICA
Nitrogen fixation in biological soil crusts from southeast Utah, USA
The potential roles of biological soil crusts in dryland hydrologic cycles
The Ecology of Coralline Algal Crusts: Convergent Patterns and Adaptative Strategies
Disturbance of biological soil crusts: impacts on potential wind erodibility of sandy desert soils in southeastern Utah
Limits of stresses in continental crusts and their relation to the depth‐frequency distribution of shallow earthquakes
Small-scale abundance of mosses and lichens forming soil biological crusts in two semi-arid gypsum environments
Phylogenetic and morphological diversity of cyanobacteria in soil desert crusts from the Colorado plateau.