To investigate the exocrine compounds of coptotermes formosanus dinergate exocrine concentrate was obtained by different extraction. 本文主要讨论采用不同提取方法所得家白蚁兵蚁的外分泌化合物的组成及相对含量的变化.
When I get a car, I'll always stop for hitchhikers.如果我要拦车, 我就是这么做的.Many of these young hitchhikers probably come from good families.也许这些年轻的搭车者中,很多人是好家庭出生.For 14 years he collared hitchhikers who passed through town ...