叶绿体和线粒体都是比较大的实体，它们被一层膜包着，象细胞本身一样。

Chloroplasts and mitochondria are both relatively large bodies, surrounded by membranes, as is the cell itself.

youdao

叶绿体和线粒体都是比较大的实体，它们被一层膜包着，象细胞本身一样。

Chloroplasts and mitochondria are both relatively large bodies, surrounded by membranes, as is the cell itself.

youdao