3 sentences

1. 这条裤子太瘦了，我穿不下。

   zhè tiáo kù zi tài shòu le, wǒ chuān bù xià.

   These pants are too tight; I can't fit into them.

   Source: Dong Chinese Dictionary

2. 为了御寒，奶奶特地给我缝了一条厚棉裤。

   wèi​le yù​hán, nǎi​nai tè​dì gěi wǒ féng le yī tiáo hòu mián kù.

   To keep out the cold, Grandma specially sewed a pair of thick padded trousers for me.

   Source: Dong Chinese Dictionary

3. 这种棉质内裤穿着很舒服。

   zhè zhǒng mián​zhì nèi kù chuān zhe hěn shū​fu.

   These cotton underpants are very comfortable to wear.

   Source: Dong Chinese Dictionary