Infra-red is a kind of light that your eyes cannot see, but your skin can feel as warmth. The sun sends a lot of it; that is a big part of why a wall stays hot after the bright light looks gone.

Infra-red is a kind of lightInfra-red（紅外線）是一種光 that your eyes cannot see你的眼睛看不到 but your skin can feel as warmth但皮膚可以感覺到它的溫暖 The sun sends a lot of it太陽會發出大量的紅外線 that is a big part of why a wall stays hot這是牆壁在陽光看起來消失後仍然很熱的一大原因 after the bright light looks gone即使明亮的光看起來已經不見了

Heat lamps, some TV remotes, and night cameras work with it.

Heat lamps, some TV remotes, and night cameras像暖燈、有些電視遙控器，還有夜視攝影機 work with it都是靠紅外線運作的

Though actually, saying it ‘gives out heat’ is a little tidy: the infra-red radiation is the heat we feel, not a red glow plus heat on the side. It sits just past the red end of the rainbow — infra means ‘below’ — so it is not a colour of red you have failed to notice. British spelling often keeps the hyphen (infra-red); American spelling usually writes infrared as one word.

Though actually不過實際上 saying it 'gives out heat' is a little tidy說它『發出熱』有點過度簡化 the infra-red radiation is the heat we feel紅外線輻射本身就是我們感覺到的熱 not a red glow plus heat on the side而不是一種紅色的光再外加一些熱 It sits just past the red end of the rainbow它的位置就在彩虹紅色那端的外側 infra means 'below'infra的意思是『在...之下』 so it is not a colour of red you have failed to notice所以它並不是一種你沒注意到的紅色 British spelling often keeps the hyphen (infra-red)英式拼法常保留連字號，寫成infra-red American spelling usually writes infrared as one word美式拼法通常寫成一個字infrared