1. crusty

1. 有硬壳的：crustose 外壳状的 | crusty 有硬壳的 | crutch 拐杖

2. 像壳一样硬的：7. scented有香味的 | 8. crusty 像壳一样硬的 | 9. rancid 腐臭的

3.

3. 结皮：crust soil 结壳土壤 | crusty 结皮 | crymic 冻原

4. 硬皮的：硬的 stiff | 硬皮的 crusty | 味淡的 mild

1. 有硬皮的;有脆皮的
    Crusty bread has a hard, crisp outside.

    e.g. ...crusty French loaves.
           脆皮法式烤面包

2. (尤指老头儿)脾气急躁的，易发怒的
    If you describe someone, especially an old man, as crusty, you mean they are impatient and easily irritated.

    e.g. ...a crusty old colonel.
           脾气暴躁的老上校

1. brusque and surly and forbidding

    e.g. crusty remarks
           a crusty old man
           his curmudgeonly temper
           gruff manner
           a gruff reply

    Synonym: curmudgeonlygruffill-humoredill-humoured

2. having a hardened crust as a covering

    Synonym: crustedencrustedcrustlike