a crab shell的意思|示意

Crab body green, the back has a big shell, looked like a warrior wearing armor, the shell of the Central Authorities have several white patterns, I have leaned one of view, looked like a face.

螃蟹全身青绿，背上有一个大大的壳，活像一个身披铠甲的武士，壳的中央有几条白色的花纹，我凑近一看，活像一张脸。

But when an enterprising scientist placed a fiddler crab in darkness, he was amazed to find that the color of the crab's shell kept ticking off the time with the same accuracy.

但是，当一个勇于探索的的科学家把招潮蟹放在黑暗中，他惊讶的发现蟹壳的颜色依然准确的按时间转变。

Anyone who has tried to remove a hermit crab from its shell will know how tenacious these creatures can be.

任何一个试图把寄生蟹从它壳里移走的人都会知道这种生物粘得有多么的牢。

Whenever life gets to be too much for the little crab, he pulls his shell over his head and withdraws from the world to enjoy peace and to regain his balance and a sense of security.

无论何时，一旦蟹生太沉重，小螃蟹就会把壳拽下来，从这个世界退回去，享受宁静，重新得到平衡和安全感。

Chitin (crab shell powder) was the best one for controlling disease with a 72.21% reducing of disease index in pots and 62.26% reducing in plots.

调查结果表明：几丁质（蟹壳粉）处理对棉花黄萎病的防治效果最好，在盆栽和小区试验中病情指数分别比对照降低了72.21%和62.26%；

Crab sheds its hard shell, its exoskeleton, it has to wait about a week for the new.

当一只青蟹褪掉了它的硬壳(也就是它的外骨骼)之后，新长出的壳要等上大概一个星期才能变硬。