crustless

adj.无硬皮的；没有外壳的

He had the crust to ask to borrow my new car! 他竟有脸借我的新车!

The earth's crust is between 5 and 25 miles thick. 地壳有五至二十五英里厚。

Earth quakes can result from stresses in the earth's crust. 地壳内的应力可能引起地震。

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。

He had the crust to order me around. 他厚着脸皮对我发号施令。

You may slip and burst your crust by doing so. 你这样做会滑倒弄破皮的。