2 sentences

1. 这把宝剑的刃口经过打磨，变得十分锐利。

   zhè bǎ bǎo​jiàn de rèn​kǒu jīng​guò dǎ​mó, biàn de shí​fēn ruì​lì.

   The edge of this sword has been polished and become very sharp.

   Source: Dong Chinese Dictionary

2. 他在辩论中提出的观点非常锐利，令人无法反驳。

   tā zài biàn​lùn zhōng tí​chū de guān​diǎn fēi​cháng ruì​lì, lìng rén wú​fǎ fǎn​bó.

   The points he made in the debate were very sharp and impossible to refute.

   Source: Dong Chinese Dictionary