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Welcometoourclass!breadFirst,weneed：egghamtomatotomatosaucelettuceLet’smakeasandwich.First,apply（涂）sometomatosauceonasliceofthebread.Next,putthelettuceandtheeggonthebread.Then,puttomatoesandhamsontheothersliceofbread.Finally,putanothersliceofbreadonthetop.Finally（最后）,putanother（另外的）sliceofbreadonthetop.Let'stastethesandwich!