加号在英语中称为"plus sign"。
来源：加号最早被认为是由埃及学者提出，后来被古希腊学者改进并广泛使用。
例句：
"2 + 2 = 4"
"Two plus two equals four."
"Can you add these numbers together for me? 5 + 7 + 8"
"Can you perform the addition for me? Five plus seven plus eight."
"The temperature outside is 25°C, but it feels pke 35°C with the humidity, plus it's sunny."
"The temperature outside is 25 degrees Celsius, but it feels pke 35 degrees Celsius because of the humidity and the sun."