3 sentences

1. 双方正就合作细节进行磋商。

   shuāng​fāng zhèng jiù hé​zuò xì​jié jìn​xíng cuō shāng.

   Both sides are consulting on the details of the cooperation.

   Source: Dong Chinese Dictionary

2. 这两位围棋高手经常聚在一起切磋。

   zhè liǎng wèi wéi​qí gāo​shǒu jīng​cháng jù zài​yī​qǐ qiè cuō.

   These two Go masters often get together to hone their skills through practice.

   Source: Dong Chinese Dictionary

3. 制作精美的骨器通常需要经过切、磋等多道工序。

   zhì​zuò jīng​měi de gǔ qì tōng​cháng xū​yào jīng​guò qiē, cuō děng duō dào gōng​xù.

   Making exquisite bone tools usually involves multiple processes such as cutting and polishing.

   Source: Dong Chinese Dictionary