5 sentences

1. 这款耳机的外壳采用了全塑材质。

   zhè kuǎn ěr​jī de wài​ké cǎi​yòng le quán sù cái​zhì.

   The shell of these headphones is made of all-plastic material.

   Source: Dong Chinese Dictionary

2. 这台相机的金属外壳手感非常不错。

   zhè tái xiàng​jī de jīn​shǔ wài​ké shǒu​gǎn fēi​cháng bù​cuò.

   The metal casing of this camera feels very good to the touch.

   Source: Dong Chinese Dictionary

3. 这种手机的外壳是由耐用的塑料制成的。

   zhè zhǒng shǒu​jī de wài​ké shì yóu nài​yòng de sù​liào zhì​chéng de.

   The casing of this phone is made of durable plastic.

   Source: Dong Chinese Dictionary

4. 这种潜艇的外壳是由钛合金制成的。

   zhè zhǒng qián​tǐng de wài​ké shì yóu tài​hé​jīn zhì​chéng de.

   The hull of this submarine is made of titanium alloy.

   Source: Dong Chinese Dictionary

5. 潜艇的外壳必须能够承受深海的巨大压力。

   qián​tǐng de wài​ké bì​xū néng​gòu chéng​shòu shēn​hǎi de jù​dà yā​lì.

   The hull of a submarine must be able to withstand the immense pressure of the deep sea.

   Source: Dong Chinese Dictionary