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单词
plus sign
释义
plus sign
n.
Mathematics
(名词)【数学】
The symbol (+), as in 2 + 2 = 4, that is used to indicate addition or a positive quantity.
加号;正号:符号(+),如在2+2=4中的“+”,被用来表示加法或一个正数
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更新时间:2026/5/9 19:46:30