Why doesn't he carry a hard and heavy shell?

他为什么不带一个又硬又重的壳呢？

youdao

But a conch has to carry a heavy shell wherever it goes and its size is limited by the shell's size.

然而海螺不管到哪里都要背负着它那沉重的外壳，它的生长也受到外壳的局限。

youdao

A heavy mortar roared, sending a shell high over the harbor at Charleston,South Carolina.

VOA: special.2009.08.13

The Movement for the Emancipation of the Niger Delta (MEND) says armed with assault rifles and heavy machine guns raided an oil facility jointly operated by Royal Dutch Shell and Chevron in Rivers state.

VOA: standard.2009.12.21

Amani Kabasha, the M23 rebel spokesman, said that the national army used heavy artillery to shell the rebel base.

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While this is meant to be a premium product, the smear-attracting shell, dodgy build quality and bezel-heavy display rough away some of its initial glamour.

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