原帖由 fish 於 6/11/2007 11:47 AM 發表  #109+110 repeat了.... 想起某BIO老師說過對某些人時可用: The only function of (name) is to produce carbon dioxide for plants to do photosynthesis. :hug: 題目不見了:hug: Then the by-product (i.e. Oxygen) of photosynthesis will breathe by (name). Thus, they complement each other.:hug: |