2 sentences

1. 运动员正在挑战人类体能的极限。

   yùn​dòng​yuán zhèng​zài tiǎo​zhàn rén​lèi tǐ​néng de jí​xiàn.

   Athletes are challenging the limits of human physical endurance.

   Source: Dong Chinese Dictionary

2. 这场比赛不仅考验球员的技术，更考验他们的体能。

   zhè chǎng bǐ​sài bù​jǐn kǎo​yàn qiú​yuán de jì​shù, gèng kǎo​yàn tā​men de tǐ​néng.

   This game tests not only the players' skills but also their physical fitness.

   Source: Dong Chinese Dictionary