2 sentences

1. 他突然感到一阵眩晕，差点摔倒。

   tā tū​rán gǎn​dào yī zhèn xuàn​yùn, chà​diǎn shuāi​dǎo.

   He suddenly felt a wave of dizziness and almost fell.

   Source: Dong Chinese Dictionary

2. 内耳迷宫的损伤可能会导致严重的眩晕和平衡失调。

   nèi'ěr mí​gōng de sǔn​shāng kě​néng huì dǎo​zhì yán​zhòng de xuàn​yùn hé píng​héng shī​tiáo.

   Damage to the inner ear labyrinth can cause severe dizziness and loss of balance.

   Source: Dong Chinese Dictionary