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noun [ C ] uk/ˈpleɪs.həʊl.dər/ us/ˈpleɪs.hoʊl.dɚ/
mathematics, computing specialized占位符
a symbol or piece of text in a mathematical expression or computer instruction that can be replaced by particular pieces of information
江苏热线英汉汉英双解词典包含207361条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。