网站首页 汉语 德语 英语
A slide down which mail is sent to a main depository, especially in an office or apartment block.
1960s; earliest use found in Charles Olson (1910–1970).
雅致网英汉双解词典包含236457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。