n.蒴盖，囊孔盖，珠孔盖

原形：operculum复数：opercula

The operculum covers the gills of a fish, protecting them from debris and parasites.
这个盖子覆盖着鱼的鳃，保护它们免受碎屑和寄生虫的侵害。
The snail uses its operculum to seal the opening of its shell for protection.
蜗牛用它的盖子封闭壳的开口以求保护。
In some species of crustaceans, the operculum is used to protect the delicate abdomen.
在某些甲壳动物中，盖子用于保护脆弱的腹部。
The bird carefully opened the operculum of the coconut to access the nutritious meat inside.
鸟儿小心翼翼地打开椰子的盖子，以获取里面的营养肉质。
During hibernation, the frog seals its mouth with an operculum made of skin.
冬眠期间，青蛙用皮肤制成的盖子封住嘴巴。
The insect's exoskeleton has a unique operculum that helps it breathe underwater.
昆虫的外骨骼有一个独特的盖子，帮助它在水下呼吸。
After cleaning the fish, be sure to remove the operculum before cooking.
清洗完鱼后，在烹饪前确保去掉盖子。
The hermit crab exchanges its shell as it grows, using its operculum to secure each new home.
寄居蟹随着生长会更换外壳，用其盖子固定每一个新家。
Researchers found that the operculum size in certain species of mollusks can indicate their age.
研究人员发现，某些软体动物种类的盖子大小可以指示它们的年龄。
The fossilized remains of ancient cephalopods had intricate opercula made of calcium carbonate.
古代头足类动物的化石遗骸上有由碳酸钙制成的复杂盖子。