4N-COUNT 地壳 The earth's crust is its outer layer. 地壳
Earthquakes leave scars in the earth's crust.
地震会在地壳上留下裂痕。
5PHRASE [VERB inflects](尤指通过做不愿意做的工作)谋生 If you earn a crust, you earn enough money to live on, especially by doing work you would prefer not to do. (尤指通过做不愿意做的工作)谋生 [British]
In his early days, he would do almost anything to earn a crust from the sport.