Chlorophyll is the green substance inside leaves and other green parts of a plant. It catches light from the sun so the plant can make its own food from air and water.

ChlorophyllChlorophyll is the green substance是那種綠色的物質，inside leaves and other green parts of a plant存在葉子和植物其他綠色部位裡面。It catches light from the sun它捕捉太陽光，so以便 the plant can make its own food from air and water讓植物能用空氣和水自己製造養分。

That is why most leaves look green: you are seeing the chlorophyll. In autumn, many trees stop making it, and then the yellow and red colours that were hiding underneath can show.

That is why這就是為什麼 most leaves look green大部分葉子看起來是綠色的：you are seeing the chlorophyll你看到的就是葉綠素。In autumn到了秋天，many trees stop making it很多樹會停止製造它，and而且 then the yellow and red colours that were hiding underneath can show原本藏在底下的黃色和紅色就會顯現出來。

People also put the word on bottles of bright-green health drinks; though actually, drinking 'chlorophyll water' is a shop word as much as a science word, and it is not the same as a leaf doing its real work. You will meet it in school biology more than in daily chat.

People also put the word人們也會把這個字放 on bottles of bright-green health drinks在鮮綠色健康飲料的瓶子上；though actually不過其實，drinking 'chlorophyll water' is a shop word as much as a science word喝『葉綠素水』這種說法商業成分不亞於科學成分，and而且 it is not the same as a leaf doing its real work跟葉子真正在做的事並不一樣。You will meet it你會遇到這個字 in school biology more than in daily chat比較是在學校生物課，而不是日常聊天裡。