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.
居住在热带地区的人普遍采用老椰子壳和贻贝壳。
To those people who resided within the tropical zones old coconut shells and mussel shells were commonly employed.
每一步都要踩碎不少细小的灰色的贝壳，壳已风干，内中空无一物，在脚下咭嘎地响犹如白霜或易碎的珠子。
Every step crumbled up Numbers of minute grey shells, empty and dry, that crunched under foot like hoar-frost or fragile beads.
珍珠层中类胡萝卜素的相对浓度与珍珠层的颜色密切相关，在同一贝壳中从壳后端至壳顶，其相对浓度逐渐变小。
The relative concentrations of carotenoid in nacre are closely associated with the color of nacre and tend to reduce gradually from posterior to umbo region in nacre of the same shell.
结果表明：各种贝壳煅烧物都能有效抑制细菌生长，其中牡蛎壳煅烧物的效果最好。
Results showed that all the heated shell powders studied in the paper had some antiseptic actions, and the oyster shell powder exhibited the most remarkable effect.
史密斯先生告诉过我，有些种类的公蚂蚁是黑色的，母蚂蚁是带壳的。图解带贝壳的。
I am informed by mr. f. smith that the male ants of several species are black the females being testaceous.
由于海水中碳酸钙浓度降低，贝壳类 动物也许再也长不出保护壳，珊瑚礁可能会变成碎石。
Shellfish may no longer be able to create their protective shells due to falling levels of calcium carbonate in the water, while coral reefs could be reduced to rubble.
扇壳一种似扇的贝壳。
她在海岸上出售海贝壳。她出售的壳是海贝壳我确信。
我们的珍珠层霜选用富含珠母贝、贝壳硬蛋白、蛋白质和营养成分的牡砺壳制成。
Our nacre shell cream is made from crushed oyster shell which are rich in nacre, conchiolin, proteins and nutrients.
我们的珍珠层霜选用富含珠母贝、贝壳硬蛋白、蛋白质和营养成分的牡砺壳制成。
Our nacre shell cream is made from crushed oyster shell which are rich in nacre, conchiolin, proteins and nutrients.
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