不过，协定没有涉及到双壳贝类、水产品卫生和检疫问题。
However, it does not include trade of bivalves, fish health and quarantine issues.
变态过程是双壳贝类由幼虫向成体转变的一个必不缺少的发育阶段。
Metamorphosis is an important stage from larva to juvenile in bivalvia.
采用本发明可以于海区现场精确得浅水区潮间带双壳贝类的生物沉积作用。
The field measuring method and a field measuring method can accurately obtain the deposition action of bivalve living creatures in shallow water area intertidal zone in a sea area field.
这些美味的双壳贝类生物以清除水中过量的浮游植物闻名于世，它们把营养变成肉和贝壳。
The tasty bivalves are known for removing excess phytoplankton from water and sequestering nutrients in their shells and flesh.
通过的这些新标准将对保护人类健康大有帮助，因为它们提出鱼类中铅以及大米、海洋双壳贝类和头足类动物中镉的新的最高限量。
The new standards adopted will go a long way towards protecting human health, as they set out new, maximum limits for lead in fish, cadmium in rice, marine bivalve molluscs and cephalopods.
通过的这些新标准将对保护人类健康大有帮助，因为它们提出鱼类中铅以及大米、海洋双壳贝类和头足类动物中镉的新的最高限量。
The new standards adopted will go a long way towards protecting human health, as they set out new, maximum limits for lead in fish, cadmium in rice, marine bivalve molluscs and cephalopods.
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