生物学
星鲨属
Those participating will also be given materials to help identify at-risk species such as the small-spotted catshark, the starry smoothhound shark and the cuckoo ray.
BBC: Shark identification training for fishermen
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。