1 sentence

1. 游泳前不做热身运动容易导致小腿痉挛。

   yóu​yǒng qián bù zuò rè​shēn yùn​dòng róng​yì dǎo​zhì xiǎo​tuǐ jìng​luán.

   Failing to warm up before swimming can easily lead to calf cramps.

   Source: Dong Chinese Dictionary