plus sign
(arithmetic) The symbol + used to denote the operation of addition, to indicate that a number is positive, and so on.
(biology) Relating to organisms' behaviour in which food is acquired at random intervals during the day or night.
A range of radio frequencies allocated for use by private citizens through the medium of citizens' band radio.
Any bryozoan of the family Adeonidae
電卓のプラス記号は素早く足し算を行うのを簡単にしてくれる。
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