动词短语
中文翻译：拥有一层外壳
同义词：
['have a layer', 'have a crust']
例句：
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1.She had a crust of toast for breakfast.
她早餐吃了一片吐司。
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2. The pizzahas a crust that's crispyon the outside and soft on the inside.
披萨的外皮脆脆的，内里软软的。
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3. Hehad a crust of breadwith his coffee.
他喝咖啡时吃了一口面包。