plus sign
柯林斯詞典
1. N-COUNT A plus sign is the sign + that is put between two numbers in order to show that the second number is being added to the first. It can also be put before a number to show that the number is greater than zero (+3), and after a number to indicate a number that is more than a minimum number or amount (18+). 加號(hào); 正號(hào)
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