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Chinese dictionary
n.shell; hard protective outer shell of shrimp, crab, etc.
龟的甲壳上有斑纹的角质物质。
The mottled horny substance of the shell of some turtles.
甲壳素纤维
chitin fiber
龟的甲壳上有斑纹的角质物质。
The mottled horny substance of the shell of some turtles.
甲壳素纤维
chitin fiber