turtle shell
英 [ˈtə:tl ʃel] 美 [ˈtɚtl ʃɛl]

n.

龟壳；

英英释义

Turtle shell

• The turtle shell is a highly complicated shield for the ventral and dorsal parts of turtles, tortoises and terrapins (all classified as "turtles"by zoologists), completely enclosing all the vital organs of the turtle and in some cases even the head. It is constructed of modified bony elements such as the ribs, parts of the pelvis and other bones found in most reptiles.

以上来源于:Wikipedia

权威例句

A comparison of the musculoskeletal system between humans and turtles.
The turtle shell
Morphogenesis of the turtle shell: the development of a novel structure in tetrapod evolution
A geometric morphometric assessment of the effects of environment and cladogenesis on the evolution of the turtle shell
Evolutionary Origin of the Turtle Shell
A Thin-Shelled Reptile from the Late Triassic of North America and the Origin of the Turtle Shell
Beta-keratins of turtle shell are glycine-proline-tyrosine rich proteins similar to those of crocodilians and birds.
The nature of shield abnormalities in the turtle shell
Comparative bone histology of the turtle shell (carapace and plastron): implications for turtle systematics, functional morphology, ...
Unregulated Trade in Turtle Shells for Chinese Traditional Medicine in East and Southeast Asia: The Case of Taiwan