3 sentences for 利 (lì — sharp)

1. 这把菜刀磨得很利。

   zhè bǎ cài​dāo mó de hěn lì.

   This kitchen knife is sharpened very keenly.

   Source: Dong Chinese Dictionary

2. 这把利斧重达五斤，普通人挥动起来非常吃力。

   zhè bǎ lì fǔ zhòng dá wǔ jīn, pǔ​tōng​rén huī​dòng qi​lai fēi​cháng chī​lì.

   This sharp axe weighs five catties, making it very strenuous for an average person to swing.

   Source: Dong Chinese Dictionary

3. 这把剪刀的刀刃非常锐利，可以轻松剪开厚厚的纸板。

   zhè bǎ jiǎn​dāo de dāo​rèn fēi​cháng ruì lì, kě​yǐ qīng​sōng jiǎn​kāi hòu​hòu de zhǐ​bǎn.

   The blades of these scissors are extremely sharp and can easily cut through thick cardboard.

   Source: Dong Chinese Dictionary