2 sentences

1. 铁、锌和碘是人体必需的微量元素。

   tiě, xīn hé diǎn shì rén​tǐ bì​xū de wēi​liàng​yuán​sù.

   Iron, zinc, and iodine are essential trace elements for the human body.

   Source: Dong Chinese Dictionary

2. 这种药片含有丰富的锌，对提高身体免疫力很有帮助。

   zhè zhǒng yào​piàn hán​yǒu fēng​fù de xīn, duì tí​gāo shēn​tǐ miǎn​yì​lì hěn yǒu bāng​zhù.

   These tablets are rich in zinc, which is very helpful for boosting the body's immune system.

   Source: Dong Chinese Dictionary