3.Lake Manyara was ringed by crusty salt deposits.
马尼亚拉湖被看似硬壳盐沉淀物环绕。
4.He's a crusty old gentleman who feeds stray dogs and cats.
他是个令人生畏老绅士,常群狗和猫。
5." Roy giggled and oohed at the aerobatics but took in the old man's crusty, smiling face and barnstorming joie de vivre silently, with great attention.