piece [名词] 块 Ex: He collected pieces of driftwood from the beach , planning to create a unique sculpture . 他从海滩上收集了漂流木的碎片,计划创作一件独特的雕塑。
slice [名词] 片 Ex: He ordered a large pepperoni pizza and ate three slices by himself . 他点了一个大份的意大利辣香肠披萨,自己吃了三片。