2 sentences

1. 他满头大汗，汗水顺着脸颊直流。

   tā mǎn​tóu​dà​hàn, hàn​shuǐ shùn​zhe liǎn​jiá zhí​liú.

   He was sweating profusely, with sweat streaming down his cheeks.

   Source: Dong Chinese Dictionary

2. 这群孩子在院子里疯癫地打闹，玩得满头大汗。

   zhè qún hái​zi zài yuàn​zi lǐ fēng​diān de dǎ​nào, wán de mǎn​tóu​dà​hàn.

   The group of children were frolicking wildly in the yard, playing until they were dripping with sweat.

   Source: Dong Chinese Dictionary