1 Bio-diesel is a sort of reproduceable energy of friendly environment.

2 As the commercial economy develops, we should not only pay attention to the benefits in sight, but also the reproduceable potential value of the poor characters of some present local species.

3 The researching and exploiting of starch have important value as a reproduceable, nontoxic, and biodegradable resource.

4 Compared with the conventional method used in production, the advantages of this method are fast, accurate and reproduceable.

5 Meanwhile, it is necessary to search for new kinds of reproduceable energy to replace the traditional energy due to the standards of energy-saving and environmental protection.