pycnogonids

用法例句

Spider category is the predator of locust in the coastal locust area on north of Shandong province,the author through systematic observation and investigation of field from 1992 2003,the spider is subordinate to 6 section,9 category,14 species,and growth and decline of trends of spider category were clarified.

笔者于 1 992～ 2 0 0 3 a对鲁北沿海蝗区的蝗虫天敌—蜘蛛类群 ,进行了大田调查与定点系统调查。