Like those chloroplast cells -- they 're completely surrounded by other life .
就像那些叶绿体细胞-它们全被其他生命所包围。
Studies on the promoters of spinach chloroplast genes .
菠菜叶绿体基因起动子的研究。
The chloroplast is " an amazing machine , " strano says . " They are remarkable engines that consume carbon dioxide and use light to produce glucose , " a chemical that provides energy for metabolism .